All material presented below has been specially edited for a wide range of readers. Without abstruse formulas, so that anyone can understand what the author wanted to say. Perhaps in the future a special paid site will be created for a narrow circle of readers, where it will be possible to discuss and discuss new experiments and methods for calculating biologically closed systems.

General form experimental setup:

closed system	Recirculating water installation	Siberian sturgeon and coconut palm - brothers forever!	Sturgeon fry. Weight 50-100 grams

Every day sweet strawberry for tea! To taste and you can not say that it is grown on hydroponics	Here is our salad! Not an ounce of mineral fertilizers. As soon as we weigh it, we'll eat it right away and won't give it to anyone.	400W backlight visible from above

One of the many water test reports	Analysis of water as a nutrient solution for plants. Comparison with traditional solutions used for hydroponics	Using water from sturgeons to water plants in a greenhouse

Sturgeon + Strawberry = CLOSED BIOLOGICAL SYSTEM

All material presented below has been specially edited for a wide range of readers. Without abstruse formulas, so that anyone can understand what the author wanted to say. Perhaps in the future a special paid site will be created for a narrow circle of readers, where it will be possible to discuss and discuss new experiments and methods for calculating biologically closed systems.

General view of the experimental setup:
a hundred Siberian sturgeon ("Lensky" sturgeon) lived in a white plastic pool, on the left was located hydroponic setup(with fluctuating water level) for growing lettuces, strawberries or tomatoes, on the right - a filter system and a cylinder of compressed oxygen;

In the sand filter, instead of sand, plastic granules were used, the main purpose of which was to be able to populate them with nitrifying bacteria, as well as to retain suspended particles larger than 100 microns undissolved in water. Such a modified filter is both a biofilter and a mechanical filter. In order to avoid the formation of stagnant zones (anaerobic) and clogging of the biofilter, the filter was often backwashed;

The wash water was settled and the solid sludge was used for compost;

An alarm system was installed that called the main developer's cell phone (the system was assembled from a burglar alarm and was therefore inexpensive). Three sensors are connected to the input relays: the presence of electricity in the office, the concentration of oxygen in the water, and the water level in the fish pool. The main purpose of the experiment is to check the accuracy of a mathematical model describing a closed ecosystem in terms of nutrients.

Developed and assembled the installation Krasnoborodko V.V.

Before the start of the experiment, water parameters were selected that needed to be maintained during the experiment:

For sturgeon:
- maximum concentration of ammonia, mg/l;
- the maximum concentration of total ammonium (was calculated knowing the pH and temperature of the water), mg/l;
- maximum concentration of nitrite, mg/l;
- maximum concentration of nitrate, mg/l;
- maximum concentration of undissolved suspended particles, mg/l;
- maximum concentration of carbon dioxide, mg/l;
- minimum oxygen concentration, mg/l;
- water temperature, C;
- pH range of water (taking into account the needs of plants);
- water alkalinity range (calculated taking into account pH and CO2 dependence), mg/l as CaCO3;
- range of water hardness, mg/l as CaCO3.

For strawberries:
- maximum concentration of dissolved substances, mg/l;
- optimal concentrations of macro and microelements: Ca, Mg, K, N (as NO3), P (as PO4), S (as SO4), Cl, Fe, Mn, Cu, Zn, B, Mo.

To adjust the pH of the water, the following were used: KOH, CaO, Ca(OH)2 (as is known, the waste products of fish lower pH, while plants, on the contrary, increase it. But in this case, oxidative processes dominated).

As a result of this experiment, a large experimental material was accumulated, including: the dynamics of the main nutrients (NO3, PO4, SO4, K, Ca and Mg) supplied with fish food and accumulated in fish, plants and solid waste. As a result of this experiment, the water did not spill anywhere, but was reused. Water losses consisted only of evaporation. The pH was adjusted twice a day (especially at the end of the experiment, when the sturgeon biomass increased significantly), while the microelements were adjusted once a week. Macronutrients were not added, because. came with fish food, except for potassium and calcium, which were added in the form of hydroxides, depending on what was lacking.

The mathematical model of the behavior of such a biosystem at the end of the experiment was brought to perfection. It was possible even without expensive tests to accurately predict the current concentrations of macroelements in the water, the amount of hydroxides needed to adjust the pH of the water, as well as some trace elements.

The operation of such closed systems (with circulating water supply) requires the obligatory presence of a trained operator within 24 hours. This is important for the rapid elimination of breakdowns in the life support system of fish. If the stocking density of fish is high (the author brought it up to 400 kg / m3), in order to achieve maximum yield and reduce the cost of heating the room, then the probability of breakage of the components of your installation increases. For example, if you stop supplying fish with oxygen, you risk losing the entire population of fish in 20 minutes!

The operation of a system in which fish and agricultural crops are grown together is a very complex matter, requiring knowledge from three completely different, at first glance, areas of science. These are aquaculture (fish farming), hydroponics (greenhouse farming) and microbiology (cultivation of bacteria in a biofilter). Animals, plants and bacteria - these are the three actors in any closed biological system that live in symbiosis with each other. The first description of such joint coexistence was given in the last century by V. I. Vernadsky and called it "The Doctrine of the Biosphere"!

However, not everything is as complicated as it seems at first glance. Organisms living on Earth are quite difficult to destroy, at least simple life forms. If we describe the behavior of such three whales as: animals, plants and bacteria, or, let's call them differently, consumers, producers and destructors, then we get a differential equation of the 2nd order, which has no direct solution. But we know that life forms are tenacious, moreover, they are able to adapt to changing environmental conditions, so there is no need to try to take into account all the chemical elements, but rather to concentrate on the so-called "markers". For the rest of the chemical elements, the system will bring itself into balance. Therefore, the equation is simplified and becomes completely solvable. This is the main idea of ​​Vasily Krasnoborodko's mathematical model. Thanks to this approach, it was possible to accurately calculate completely closed systems and develop a method for the production of absolutely sealed live aquariums. You ask why only such small aquariums with shrimp are produced, and not with fish? And it is very simple to create completely closed system for a small fish, you will need a volume of at least 200 liters of water. You will have to collect it in the laboratory, and you won’t be able to take it home, because. A 200 liter aquarium weighs 200 kg!

Why was it necessary to fence this whole garden?

For growing heat-loving fish species, an important criterion is the water temperature. In our climatic zone, with the usual method (for example, cage) it is possible to grow sturgeon only 4-5 months a year. The rest of the time the sturgeon does not feed and, accordingly, does not grow. Therefore, it grows from 3 gram fry to a marketable weight of 1 kg in 2-3 years. The optimal temperature for sturgeon growth is 20°C-24°C. Heating water at a sturgeon factory is a dead end. It is impossible to heat 200 m3/h of water from 10°C to 24°C - an entire power plant is not enough for this! The only way out of this situation is to plant the sturgeons high in the pools and not use the water from the river, but to clean and not release warm water from the system (sturgeon + strawberries). Then you can place the entire installation in a heated room and keep the temperature at 20°C-24°C. Preliminary results have shown that it is possible to produce up to 80 kg of sturgeon per m2 of a 1 m deep pool per year and 10 kg of strawberries from the same area. Sturgeon is a predator, so the roots of plants are of no interest to him. The cost of sturgeon with this method drops several times! So it is possible to create fish production based on this technology. With this method of cultivation, a low consumption of compound feed is achieved - 1.5 kg of compound feed is consumed per 1 kg of sturgeon, against 3 kg of compound feed in pond cultivation. Why this is so is not difficult to understand. With pond fish you have a wintering period when the water temperature gets cold. The fish stops eating and, accordingly, does not gain weight, but loses weight. In the summer you feed her, and in the winter she loses weight. In a closed system, you can keep the water temperature warm and you don't have a wintering period. The fish eats, gains weight, thinks that winter will come tomorrow. That's why the feed consumption is 2 times lower! No fish farm can compete.

In aquaponic installations, strawberries or strawberries receive nutrients from the water constantly circulating through the boxes. Water, with nutrients dissolved in it, flows along the bottom of the box in a thin layer. Plants are planted in cups, the bottom of which is slightly raised and does not touch the nutrient layer. As the plants grow, the roots sink into the nutrient layer and receive all the nutrients enriched with oxygen from the liquid. Strawberries (strawberries) are best grown on a solid, breathable substrate (expanded clay, coarse perlite, gravel, coarse river sand).

Strawberry (strawberry) roots should not be in a stationary solution. This will lead to the death of the plants. The roots of strawberries (strawberries) also do not like abundant and prolonged flooding.

One adult strawberry plant requires a capacity of 3 liters or more. You can plant plants in one container, this will require 10-15 liters for 3-4 plants. In greenhouses, about twenty plants are planted per square meter. Plants are placed at a distance of 20-30 centimeters from one another. Varieties with large leaves are planted at a greater distance. Compact varieties can be planted at a distance of 10-15 centimeters between plants.

Also widely used in aquaponics systems for growing strawberries (strawberries) is a mixture of vermiculite and perlite in combination with drip irrigation. In installations with expanded clay and drip irrigation, water is supplied for 15-20 minutes every 1.5 hours. The solution should not fall on the plant.

Vertical cultivation of strawberries

To save space and maximize the use of space, grow strawberries vertically. To make it beautiful vertical installation, must be planted strawberries (strawberries) in tiers or use varieties that are prone to fruiting on daughter rosettes as well. With the vertical method, 60-100 plants can be placed per 1 square meter. The amount depends on the variety and equipment used.

Pollination of strawberries in greenhouses with aquaponics

yield strawberries in aquaponics directly depends on the organization of artificial pollination in greenhouses. Consider several ways to pollinate strawberries (strawberries) in a greenhouse.

If the plantation is small, several square meters to grow up to a hundred plants, you can apply a simple method of pollination by hand - using an ordinary, but always very soft, brush (for drawing or a small cosmetic brush). The brush should only be made of natural bristles. A working morning in a greenhouse, when strawberries begin to bloom, one must begin by taking a brush and carefully brushing over each opened flower. By simultaneously growing two or three varieties of strawberries or strawberries, you will achieve cross-pollination of flowers, and this will positively affect the yield and quality of berries.

The second method of artificial pollination of strawberries: using a fan. The fan turns on and the air flow is directed to the strawberry flowers. It looks like the wind is blowing. The fan should not be close, and the air flow should in no case damage the flowers and the strawberry plants themselves.

The third way is pollination of strawberry flowers by bees or bumblebees. It is usually resorted to when the strawberry plantation is extensive, and it is unrealistic to cope with pollination on your own. Both bumblebees and bees are used at the same time, as they work differently on strawberry flowers and in different time days. As a result, an ideal pollination of strawberry (strawberry) flowers occurs in the greenhouse. One family of bumblebees or bees, with intensive flowering of strawberries in aquaponics, pollinates approximately 0.2 hectares.

The process of pollination of strawberries when grown on aquaponics Firstly determines the yield and quality of the fruit. But, unfortunately, pollination issues are currently given very little importance.

Varieties of strawberries in aquaponics

Choosing a variety of strawberries (strawberries) for growing in a greenhouse on aquaponics depends on the purpose of growing strawberries. For the constant production of berries over a long period of time, remontant varieties of neutral daylight hours are needed. If you plan to sell strawberries, pay attention to the size, density of the berries and the possibility of transportation. It is easier to sell the same medium-large berries than giant berries in half with small change.

The most commonly used varieties are: Pineapple, Khonia, Zenga Zengana, Crown, Marmolada, Darselect. IN last years in the Netherlands and Belgium (the main producing countries of greenhouse strawberries and strawberries, the Elsanta and Sonata varieties are used almost exclusively. Alternatively, you can grow a self-pollinating small-fruited strawberry variety Suprim.

Eichornia - water hyacinth

Eichornia

Eichornia (water hyacinth) - tropical plant rapidly gaining popularity among the Russians. Eichornia is native to the Amazon.

Water hyacinth grows on the surface, the roots can float in the water or take root depending on the depth of the reservoir. Eichornia leaves are dense and shiny, oval in shape and have air cavities that act as floats. The leaves of the water hyacinth are collected in a basket. Eichornia inflorescences have a wonderful aroma and look like garden hyacinth flowers.

Water hyacinth reproduces with lateral whiskers from the outlet.

Unique properties of water hyacinth.

High growth rate water hyacinth. In three months, up to two hundred eichornias grow from one bush. The mass of plants doubles in a month.
Some scientists believe that it is Eichornia, which has lived on earth since time immemorial, that we owe the formation of oil and gas reserves.

nutritional value water hyacinth is high. Green eichornia is readily eaten by many species of animals, birds and fish. Eichornia is well eaten by ducks, nutria. Water hyacinth is eaten by herbivorous fish: carp, carp, grass carp...

High absorption rate of fish metabolism products, mineral and organic substances makes water hyacinth an excellent filter for water. Suspended particles settle well on a powerful root system. Water hyacinth absorbs dissolved inorganic substances from water, including cyanides, oil pollution, heavy metals, phenol. Eichornia suppresses pathogenic bacteria in water, kills Escherichia coli. A hectare of water hyacinth processes 150-200 kg of ammonium nitrogen, 2-5 kg ​​of oil products per day.
At the beginning of August 1999, several eichornia plants were planted in a waste channel 50 m long, 3 m wide and 1 m deep at the Novosibirsk Tolmachevo airport. By September, the plants had grown so large that they formed a continuous carpet on the surface of the water. And even in such a short period, the content of nitrates, chlorides, oil products and other pollutants has dropped sharply.

Application of water hyacinth in our eco-system

In our closed ecosystem, water hyacinth is used as an element:

• cleaning block. Allows you to reduce the amount of make-up water.
• plant growing unit. It is planned to be used as food for herbivorous fish.

Nymphaeum in the pond: description, planting, care in Siberia.

Legends...

Almost every nation has legends about water lilies - nymphs. Description of the most beautiful of them, in our opinion, we publish in a separate article.

My name is Vladimir Skrynin. Half my life I worked on fish farms. He started with a fish farm in the Rostov region. For some time I worked on a fish farm in Germany, until fate threw me on a farm with a RAS in Israel. I was amazed how magnificent sturgeon is grown in closed artificial reservoirs in the middle of the desert. The owner of the farm - our former compatriot - once brought fry from Russia. Sturgeon caviar from our farm was exported to more than 30 countries of the world at a price of 500 - 900 dollars per kilogram! I have seen everything, but the fish breeding density of 150 kg of fish in 1 m3 of water is simply incredible.

Having accumulated experience, I returned to Russia - to the homeland of the sturgeon. Now I sell black caviar, fry, fish. The business brings me more than 300 thousand dollars a year.

Why I got into fish farming and why it might work for you too

• Sturgeons are very valuable for their caviar (the amount of which is simply enormous) and incredibly tasty meat(Yes, even without bones).
• Trout and sturgeon meat is expensive. Let's compare the approximate prices for fish products per kg. If carp is $4, catfish is $4.5, trout is $11, then sturgeon is $18 per kg. Agree, a significant difference in price!

In addition, there are excellent conditions for your own business:

• There is practically no competition in the market, since valuable fish species in the natural habitat are practically exterminated.
• You can earn big money by selling grown fry.
• It is possible to keep a large number of fish in a small area.
• Thanks to modern technologies, farmers breed valuable fish species even at home.
• At first, this type of business can be done without state registration, and with large volumes, you can switch to a single agricultural tax.

Of course, if opportunities allow, you can go in for sturgeon, and trout, and carp, and much more.

The easiest way to grow carp. It is bred by most fish farmers in our country. After all, carp is tenacious, unpretentious, most reservoirs suit it. But on the market, at almost the same breeding costs, capricious and sensitive trout are almost three times more expensive.

Domestic fish farming

In our country, fish are in great demand. In most domestic fisheries, carp, silver carp, catfish, grass carp are bred in large ponds. Few people use modern technologies for high-intensity breeding of these and other fish species in small water bodies.

In Russia, in recent years, the sturgeon population has decreased tenfold. Prices for caviar and meat jumped up accordingly. If 6 years ago sturgeon caviar cost 300-500 dollars per kilogram, now it is 600-1200 dollars/kg.

At the same time, meat and caviar of valuable fish species in in large numbers imported from abroad. The question is: Why?

As a rule, many Russians are afraid of the difficulties in breeding fish, namely:

a) safety of fry;
b) illness;
c) difficulties with the choice of food;
d) slow growth of fish;
e) the effect of adverse weather conditions on the growth and wintering of fish.

Proper maintenance and feeding can completely avoid these problems.

Feed is worth buying, because in our time feed is produced for growing various kinds fish. So if you know which one is needed in your situation, then it simplifies and reduces the cost of growing to the desired proportions (and in fact, the livestock can increase by 1000% in a year). It contains all necessary elements and there is no need to spend a lot of time counting.

But with the "brood stock" it is more difficult, on farms they do not pay attention to normal cultivation. Fish make closely related bonds - which worsens their performance many times over! After all, 85% of meat yield depends on genes!

Most beginner fish farmers are "banging their heads against the wall" without knowing effective feeds and rearing methods! They do not even realize that the little fish in the pond and its illnesses are just for these two reasons!

It is widely believed that in the southern regions - for example, in the Krasnodar and Stavropol Territories, it is much more profitable to breed fish. Although, if you build the entire technology correctly, as well as select or build a suitable reservoir, then the business can be made profitable in middle lane and in Siberia and the Far East ...

Many believe that a large investment is needed to establish a fish farm. Indeed, for profitable breeding of carp or catfish by outdated methods, you will need big pond. Thus, when using outdated methods, you can forget about breeding fish in a small plot of land or at home.

But read on...

And you will learn how to get extra profit from your Fish and offspring and how I personally earn from fish farming!

Many are afraid that fish breeding is such a painful and long process that they do not want to do it.

But it's not. Any Fish can be profitable in a few months, it is not necessary to wait a year! I will tell you what to do so that your farm is like this:

This is a farm in Israel, where closed water technology is applied. Thus abroad bred maximum amount fish on small area indoors. On such farms, fish are kept in ideal conditions, which makes it possible to exclude any diseases and accelerate growth at times.

I will teach you these advanced breeding techniques so that the fish grows quickly and does not get sick at all!

But what if you can't afford an entire farm? Or do you have no money to purchase the first 1000 fry?

I will help you! There are a couple of "secrets" that allow you to breed Fish for yourself and for sale even on 3 acres of your dacha, starting with just 30 fry of any breed you are interested in!

I will tell you the story of my friend farmer Mr. Zordel. He became a millionaire farming trout.

He started with one makeshift concrete trout pool, and now he has 6 farms and restaurants that offer a wide variety of fish dishes. The client chooses what kind of fish he wants, and it is immediately caught and cooked for him. For fresh and delicious fish visitors come from afar.

Mr. Zordel takes water from the river, and after circulating in the ponds, the water flows freely back into the river.

The simplest technology without the use of pumps and filters allowed to quickly expand the business. A concomitant catering business Mr. Zordel makes it possible to sell fish in the form of dishes to the final consumer at a good price.

How to start?

To organize your own business, you only need desire. You do not need to buy a separate room - you can breed fish using closed water supply technology at home or in the basement. In 1 cu. meter of water you can contain about 40 kg of delicacy fish. You can abandon the purchased plastic or metal pool, and make it yourself from polypropylene.

Yes, for indoor fish farming, you will also need a filter and a pump. But they are inexpensive and can be purchased at specialized stores. Despite the initial cost of purchasing equipment, home fish farming allows you to grow fish much faster due to the fact that the water in the pool does not freeze. If you purchase additional equipment for saturating water with oxygen, you can keep up to 150 kg of fish per cubic meter at home. meter of water.

If you have household plot, but there is no pond, you can make it yourself from a film for a pond. The construction of a film pond will cost much less than the construction of a concrete pond, and the reliability and service life of such a reservoir will be much longer - more than 50 years.

If it is possible to make a water intake, take water from a well, or install cages on a flowing river, then these will be optimal conditions for many freshwater fish species.

When breeding carp, everything is much simpler. He is unpretentious in content and eats absolutely everything from plankton and insects to food waste, and lives in any water bodies. Agree, these are quite easy conditions of detention.

You will also need to buy fry. However, in the future you will be able to successfully hatch your fry and earn even more from their sale than from the sale of fish meat.

The profitability of home breeding fish for meat is 40-70%, depending on the type of fish grown.

However, the main condition for obtaining high rates is high productivity and a high percentage of fish safety. To do this, you must strictly follow the technology.

You can follow the path of trial and error, collect information bit by bit from books and forums on the Internet. But won't you fall into such a loss, investing a lot of your time and money in vain, getting "goldfish" only for yourself without the opportunity to establish a profitable business?

It is best not to go blindly, but to follow the experience of those who have already achieved some success. Then it will not be difficult to overcome all obstacles.

I spent twelve years of my life working on farms abroad and gaining experience before starting a fish farming business.

All your years of experience on highly productive fish farming, I managed to put in one unique training course

Fish farming is a tasty and profitable business

From the course you will learn:

• Device, types of reservoirs for keeping fish.
• How to build a pond from a film with your own hands.
• Schemes of the closed water supply device for high-intensity fish breeding.
• What kind of fish should be bred and why.
• Breeding technologies for the most profitable fish species
• How and what to feed this or that type of fish (preparation, distribution, control)
• Recipes for making effective fish feed
• The content of vitamins and minerals in fish feed
• Diseases of fish and methods of dealing with them, disease prevention
• Fish transportation
• Calendar of work on growing carp, trout, grass carp, sturgeon, silver carp, tilapia, catfish
• How to combine fish farming with crayfish farming.
• How to sell ready-made meat, caviar, fry.
• how to make money on breeding fish from 15,000 dollars a year.

I will tell you how to breed fish all year round, regardless of the weather, and at the same time significantly save on feed!

And ONLY depends on YOUR desire,
how much will you earn on growing fish - 15 000 , 50,000 or $300,000

What are you getting?

First, fresh fish to the table daily;
Secondly, net profit minimum - from 15,000 dollars a year for the sale of fry alone.

In my experience, the average herd is about 3000-6000 heads. But let's give a calculation for only 20 fry as the first livestock using the example of tilapia

On average, one live tilapia fry costs from 0.8 to 1.2 dollars, we will take the price of 1 dollar - this is the price at which I sell the fry.

In one year from each pair of spawners under regulated conditions we get from 1500 to 2000 fry. From 20 fish of the first population we get from 15,000 to 20,000 fry.

Let's take the minimum: 15,000 fry * 1 dollar
= $15,000 per season for fry only!

This calculation is given for the sale of fry, but if you start growing for sale? At a price not of 1 dollar, but already up to 11, depending on the region and type of fish, for example, Trout is sold at exactly 11 dollars per kilo. Sturgeon is even more expensive, carp is a little cheaper - about 3.5-4 dollars per kilo, with a fish weighing up to 4 kilograms - this is an excellent income!

By ordering a course before February 24, 2020, you will receive as a bonus - an additional technology that is indispensable for a gardener

COURSE "Year-Round Cultivation of Strawberries"

I want to inform you that there is a progressive technology for growing fish and strawberries all year round.

Thanks to this technology, you can save on the purchase of a filter for home fish breeding, and at the same time get record strawberry yields. This technique has recently been widely used in the West for year-round cultivation fish and strawberries indoors. In Russia, she is practically unknown.

In addition to the bonus, you will receive 2 packs of seeds as a gift garden strawberries.

(For your convenience, the digital bonus will be recorded on the disc with the main course)

And here are the reviews of those who have already achieved success in breeding fish

I went the easy way. I agreed with the head of the village council and placed cages on the river. I sold half of the commercial trout for the winter. For the year I recaptured all my expenses and made good money. My advice is if there is a river nearby, set up cages. Well, study the course carefully. He helped me a lot.

Alexey Nazarov. Kaluga region, Dzerzhinsky district, Milyonki settlement.

Greetings. Our family loves fish. However, often I had to deny myself this pleasure because of its high cost. When I got tired of eating fish with my eyes on the shelves, I began to search the Internet for information on breeding. I was inspired by the course and decided to start growing at home. I made the pools myself, connected the pipes and fittings myself. I included strawberries in the scheme exactly as you described in the method. So I did without a filter. From eight cubic meters of water, in the first year I received 200 kilograms of sturgeon, which we ate to our heart's content, and I sold some of it. The next year I decided to take up tomatoes, which seem to purify water even better. Let's see.

Yura Podluzhny. Kostroma.

I have been growing silver carps in the country pond for three years now. But it used to be more of a headache than a benefit. Usually, 90 percent of the fry did not survive until autumn. The winter before last, I decided to give up my hobby altogether, because there was little sense. Your fish breeding course was a real find for me. Now I understand my mistakes. Now my fish is not only a hobby, but also a good income for the family budget.

Ivan Nikolaevich, Balashikha.

You do not have to go through trial and error, receive losses, invent new technologies, you just take and repeat MY success! Of course, not for nothing, because I don’t want to give away my experience just like that.

How much would you have to pay for a consultation a good specialist before starting your own business?

I think about 10,000 rubles.

But I didn’t collect it in order to rob novice fish farmers.

Therefore, usually my allowance costs 5250 rubles.

Until the end of the action left - 6:34:34

Agree, not such a big price for such a profitable business!

After all, it's really about a small amount- for this money you can, for example, go together to a cafe. I offer you not just information, but the start of your own business - and the beginning of a new life.

The disk with the course will be sent to you by Russian Post cash on delivery! You can get the course at your nearest post office. Payment occurs upon receipt of the disk.

a hundred Siberian sturgeon ("Lensky" sturgeon) lived in a white plastic pool, on the left was a hydroponic installation (with fluctuating water level) for growing lettuce, strawberries or tomatoes, on the right - a filter system and a cylinder with compressed oxygen;

in the sand filter, instead of sand, plastic granules were used, the main purpose of which was to be able to populate them with nitrifying bacteria, as well as to retain suspended particles larger than 100 microns undissolved in water. Such a modified filter is both a biofilter and a mechanical filter. In order to avoid the formation of stagnant zones (anaerobic) and clogging of the biofilter, the filter was often backwashed;

the wash water was settled and the solid sludge was used for compost;

an alarm system was installed that called the cell phone of the main developer (the system was assembled from a burglar alarm and therefore was inexpensive). Three sensors are connected to the input relays: the presence of electricity in the office, the concentration of oxygen in the water, and the water level in the fish pool. The main purpose of the experiment is to check the accuracy of a mathematical model describing a closed ecosystem in terms of nutrients.

Developed and assembled the installation Krasnoborodko V.V.

Before the start of the experiment, water parameters were selected that needed to be maintained during the experiment:

For sturgeon:
- maximum concentration of ammonia, mg/l;
- the maximum concentration of total ammonium (was calculated knowing the pH and temperature of the water), mg/l;
- maximum concentration of nitrite, mg/l;
- maximum concentration of nitrate, mg/l;
- maximum concentration of undissolved suspended particles, mg/l;
- maximum concentration of carbon dioxide, mg/l;
- minimum oxygen concentration, mg/l;
- water temperature, C;
- pH range of water (taking into account the needs of plants);
- water alkalinity range (calculated taking into account pH and CO2 dependence), mg/l as CaCO3;
- range of water hardness, mg/l as CaCO3.

For strawberries:
- maximum concentration of dissolved substances, mg/l;
- optimal concentrations of macro and microelements: Ca, Mg, K, N (as NO3), P (as PO4), S (as SO4), Cl, Fe, Mn, Cu, Zn, B, Mo.

To adjust the pH of the water, the following were used: KOH, CaO, Ca(OH)2 (as is known, the waste products of fish lower pH, while plants, on the contrary, increase it. But in this case, oxidative processes dominated).

As a result of this experiment, a large experimental material was accumulated, including: the dynamics of the main nutrients (NO3, PO4, SO4, K, Ca and Mg) supplied with fish food and accumulated in fish, plants and solid waste. As a result of this experiment, the water did not spill anywhere, but was reused. Water losses consisted only of evaporation. The pH was adjusted twice a day (especially at the end of the experiment, when the sturgeon biomass increased significantly), while the microelements were adjusted once a week. Macronutrients were not added, because. came with fish food, except for potassium and calcium, which were added in the form of hydroxides, depending on what was lacking.

The mathematical model of the behavior of such a biosystem at the end of the experiment was brought to perfection. It was possible even without expensive tests to accurately predict the current concentrations of macroelements in the water, the amount of hydroxides needed to adjust the pH of the water, as well as some trace elements.

The operation of such closed systems (with circulating water supply) requires the obligatory presence of a trained operator within 24 hours. This is important for the rapid elimination of breakdowns in the life support system of fish. If the stocking density of fish is high (the author brought it up to 400 kg / m3), in order to achieve maximum yield and reduce the cost of heating the room, then the probability of breakage of the components of your installation increases. For example, if you stop supplying fish with oxygen, you risk losing the entire population of fish in 20 minutes!
Critical time interval:

The operation of a system in which fish and agricultural crops are grown together is a very complex matter, requiring knowledge from three completely different, at first glance, areas of science. These are aquaculture (fish farming), hydroponics (greenhouse farming) and microbiology (cultivation of bacteria in a biofilter). Animals, plants and bacteria - these are the three actors in any closed biological system that live in symbiosis with each other. The first description of such joint coexistence was given in the last century by V. I. Vernadsky and called it "The Doctrine of the Biosphere"!

However, not everything is as complicated as it seems at first glance. Organisms living on Earth are quite difficult to destroy, at least simple life forms. If we describe the behavior of such three whales as: animals, plants and bacteria, or, let's call them differently, consumers, producers and destructors, then we get a differential equation of the 2nd order, which has no direct solution. But we know that life forms are tenacious, moreover, they are able to adapt to changing environmental conditions, so there is no need to try to take into account all the chemical elements, but rather to concentrate on the so-called "markers". For the rest of the chemical elements, the system will bring itself into balance. Therefore, the equation is simplified and becomes completely solvable. This is the main idea of ​​Vasily Krasnoborodko's mathematical model. Thanks to this approach, it was possible to accurately calculate completely closed systems and develop a method for the production of absolutely sealed live aquariums. You ask why only such small aquariums with shrimp are produced, and not with fish? And it's very simple, in order to create a completely closed system for a small fish, you will need a volume of at least 200 liters of water. You will have to collect it in the laboratory, and you won’t be able to take it home, because. A 200 liter aquarium weighs 200 kg!