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2 ways of breeding artemia as fish food

Artemia is a small crustacean that is used as food for fry and adult fish in an aquarium. Diluted Artemia at home.

For feeding of young stock, larvae (nauplii) and mature crustaceans for medium-sized fish are used. They live in salt ponds.

Crustaceans of artemia (lat. Artemia salina) grow to 12–18 mm.

The average life expectancy of 4-6 months. They are heterosexual creatures, but in the absence of males, females of artemia are capable of parthenogenetic reproduction.

Externally, the male can be distinguished from the female by the “claws” near the head of the males, and the egg sac of the females. Claws help with feeding on phytoplankton – the main ration, and during mating.

Artemia eggs are used as food for fry fish. Larvae (nauplii) are obtained from them, and with the help of special feeds, they are grown to adult individuals.

There are ordinary eggs with shell and without (decapsulated). They are more sensitive to environmental conditions.

For cultivation using cysts 2-3 years.

Preparation includes several steps. In the first stage, buy or prepare:

  • Capacity for cultivation on 10–15 l.
  • Harvest artemia eggs (cysts).
  • Thermometer and water heater.
  • Sea salt
  • Sponge filter (aerlift).
  • Torch.

In the next step, prepare a place for the tank. There should be an electrical outlet near where you plug in the equipment. Do not install in the sun or in a draft so that there are no temperature fluctuations.

Rinse and dry the container. Then pour the separated water and add sea salt in the proportion of 35 g of salt to 1 liter of water.

Cysts develop in saline water.

Then install the equipment: filter, thermometer, heater. The presence of temperature sensors for regulation is highly desirable in the heater. After pouring in water and installing equipment for 24 hours, periodically check the salinity using a refractometer and water temperature.

If unmotivated jumps of indicators are not found, then it is possible to proceed with incubation.

To create normal conditions for growing artemia in a tank, check the basic parameters weekly: water temperature, salinity, acidity. The water temperature should correspond to 20–26 ° C, and during incubation 27–30 ° C. If it is higher, the crustaceans will be faster than they need to breed.

Acidity should be 8.0–9.0 pH, hardness 9–11 dH. Change the fourth part of the water weekly.

Use salt water for replacement.

Another convenient way to breed Artemia at home is to create a “Weiss” machine yourself. Here is a list of items:

  • 2 clean, empty plastic containers of 2–3 l;
  • compressor for aquarium;
  • flexible tubing to connect the compressor to the incubator;
  • solid tube with a spray;
  • dishes for artemia salina;
  • butterfly net with small pores;
  • a flashlight or a small lamp;
  • cysts;
  • sea ​​or kitchen salt, but not iodized;
  • sodium bicarbonate (soda).

When creating an incubator, cut off both containers in the following way: in the first part with the neck, and in the second part with the bottom. Next, cut the bottom set in another container down the neck.

Connect the solid tube with the sprayer to the flexible hose of the compressor and insert it into the upper tank. Then pour in the heated water to 26–29 ° C in the tank.

Water should be chlorine free. It is very harmful for Artemia crustaceans.

In the next step, add salt to the water in proportion to 3 liters of water 2 tbsp. l and a pinch of soda. After turning on the compressor, you can fall asleep Artemia eggs. For the period of incubation, usually 1-2 days, do not turn off the compressor.

Place a table lamp close to the reservoir to illuminate and heat the water.

The method for creating an incubator described above is simple and inexpensive. But there are options for creating more advanced options. For example:

  1. In the lid of the upper tank, drill two holes as thick as a dropper hose.
  2. Make the same hole in the bottom support tank on the side.
  3. During incubation, cover one hole in the lid with a valve, and pass the flexible tube through the second and side in another container, connecting it to the compressor.
  4. When the run-off period ends, turn off the compressor. Wait for the artemia salina to gather at the bottom of the tank, lure them with flashlight.
  5. Close the valve opening for the compressor (aerator). Connect the tube to the other, which was closed by a valve.
  6. Substituting a clean dish, merge the young Artemia. But be careful, after overflowing the crustaceans, block the hose, otherwise the remaining water will flow into the prepared pot. At the same time it is easy to make cleaning of garbage and eggshell.

When breeding Artemia at home using two methods.

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The first consists of the following actions:

  • Pour water into the container with the salt dissolved in it (a ratio of 30–40 g per 1 liter).
  • Cover with a lid in which you make 2 holes in advance.
  • Insert 2 thin hoses into the holes: long to the bottom and short not touching the water to vent.
  • You put a sprayer on one end to a long tube, and you connect the other to a compressor. Thanks to this, Artemia cysts will move continuously.
  • With a stable temperature of 23-25 ​​degrees, the first batch will mature in 2 days. If the temperature is 29–30 ° C, the period will be up to 36 hours.
  • To remove artemia, turn off the compressor for a few minutes so that the salina sinks to the bottom.
  • Change to a similar lid with two openings, but now that hose that is connected to the compressor does not reach the water. The other reaches the bottom, the other end is installed in a clean container, covered on top with a cloth that passes water well.
  • Turn on the aerator, and water will be poured into the new container, and Artemia will remain in the tissue.
  • The last step is flushing and cleaning debris and shells. You can feed aquarium fish.

This option has 2 drawbacks. The first is a low percentage of hatched crustaceans.

The second is the inability to immediately clean the artemia from the shell and debris, and they enter the intestines of the fry along with food, which is bad for them.

In the second method, pour 2 water into a 3 liter container, pour 3 tbsp. l salt and add floating alga. Then add 1 teaspoon of washed cysts. Connect the compressor in the mode so that the eggs are in motion, do not sink to the bottom.

In the incubator, install a thermometer to control the temperature. Ideal if the temperature in the incubator corresponds to the aquarium one.

Place a nearby lamp for continuous illumination.

When nauplii appear, in 1-2 days, through a dropper tube, pour water from the tank to another. On another dish on top, put the fabric permeable water.

When you reach the required number of crustaceans, return water to the first container. A sorted Artemia rinse and feed the fish.

If you want to use saline to feed larger fish, install an incubator in the sun with algae. They are for artemia feed.

When the walls of the tank will be covered with vegetation run the crustaceans. But watch out for the water parameters.

In fresh water, the crustaceans will die within hours.

Under natural conditions, Artemia crustaceans feed on detritus, algae, and bacteria. In an aquarium, feed with powdered milk, egg powder, spirulina powder, crushed greens.

Feed salina 2-3 times a day in small portions. Ensure that no food remains.

They quickly deteriorate and rot, polluting the environment. If, however, the food remains, at the next feeding, reduce the portion.

To improve the results of Artemia dilution, freeze the cysts in the freezer for 24 hours before incubating. The optimum temperature is -20-25 degrees.

In the absence of a freezer, you can hold the cysts for 20 minutes in a 3% hydrogen peroxide solution, and then rinse and pour into the incubator. This method also improves the results of the germination of Nauplia artemia.

If it is necessary to preserve cysts for a certain period, it is necessary to ensure dryness and tightness. For example, you can put them in a sealed dry bag, and leave them in the refrigerator.

When storing the main thing is that there is no moisture, otherwise they will deteriorate.

When it is necessary to remove the hatched artemia to feed the fry, turn off the compressor, use a flashlight or a lamp to lure saline. In this case, undisclosed eggs will go to the bottom, debris and shells will float to the surface of the water, and the crustaceans will concentrate in the illuminated area of ​​the incubator.

To separate artemia from the shell and dirty water, use a dip net or pour the liquid into another container through a straw, pre-covering it with a cloth for filtering. It remains to wash the artemia collected in the fabric, and give the fish to feed.

Artemia eggs are used as feed for fish fry. But the shell harms the digestive processes of young fish, so it must be removed (decapsulated).

To do this, use chemicals.

To decapsulate, follow these steps:

  • Feeding cysts immerse in a reservoir (20 l) with room temperature water for an hour. Amount of 1 g per 15 ml of water. The water is fresh or salty. The movement of eggs in the aquarium support the compressor.
  • After hydration is complete, transfer them to another container with a net.
  • Fill cysts in a new container with 40% sodium hydroxide solution (8l), previously cooled in a refrigerator to 5–9 ° C. Keep the tank in motion with the help of a compressor.
  • Then add cooled 5.5% sodium hypochlorite (4L) to the solution. Cooling is necessary, otherwise the temperature will rise to 36 ° C during a chemical reaction and the eggs will die.
  • When the decapsulation is completed, the eggs change color to orange and begin to sink to the bottom.

It remains to dechlorinate the water using a throw-in of sodium thiosulfate (100 g), sort the eggs through a net, rinse in fresh or salt water.

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