CATDOLL : CATDOLL: How to breed springtails for feeding fish? Simple breeding method?

Breeding pond culture: This is to cultivate directly in the tadpole pond, and the tadpoles can feed freely. It has the advantages of saving space and convenient management. The remaining bait and feces excreted by the tadpoles can be reused, which improves the utilization rate of bait. However, if the management is not good during the cultivation process, it is easy to pollute the water body and make the water quality deteriorate. How do Daphnia reproduce?

How to breed Daphnia, how to breed Daphnia?, how to breed Daphnia?

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Cultivation in breeding ponds: This method is to cultivate directly in the tadpole pond, and the tadpoles can feed freely. It has the advantages of saving space and convenient cultivation and management. The remaining bait fed to the tadpoles and the feces excreted by the tadpoles can be reused, which improves the utilization rate of the bait. However, if the cultivation process is not well managed, it is easy to pollute the water body, deteriorate the water quality, and affect the growth of tadpoles. It is not suitable for small breeding ponds. Before releasing tadpoles, apply enough basal fertilizer at the bottom of the pond, generally mainly human and animal manure or green manure that has been fully fermented. Apply 100-150 kg of manure or 200-250 kg of green manure for every 667 square meters of water surface, then irrigate, and put in Daphnia species. After a few days, the pond water turns green, and after two weeks, there will be a large number of Daphnia, and tadpoles can be released.

Breeding of Daphnia:

1. Pool construction

Both earthen and cement ponds are acceptable. The pond should be about 1 meter deep and rectangular in size of 10 to 30 square meters. The pond should be filled with water to a depth of about 50 centimeters. The water temperature suitable for Daphnia is 18℃ to 25℃, the pH value is 7.5 to 8, and the dissolved oxygen saturation is 70% to 120%.

2. Fertilization

For each cubic meter of water in an earthen pond, add 4 kg of cow, horse or other animal manure and 1.5 kg of rice straw, wheat straw or other non-toxic plant stems and leaves as base fertilizer. Apply topdressing once every 10 days, with the same amount of topdressing as the base fertilizer. After that, apply topdressing according to the water color to keep the water color yellow-brown. For each cubic meter of water in a cement pond, add 1.5 kg of cow, horse or other animal manure and 1.5 kg to 2 kg of fertile soil. Apply topdressing once every 8 days, with the amount of cow, horse or other animal manure being 0.75 kg.

3. Cultivation

Whether it is an earthen pond or a mud pond, yeast and inorganic fertilizer mixed culture method can be used. 20 grams of yeast are added to each cubic meter of water. The yeast can be soaked in water for 3 to 4 hours before being poured into the pond. 65 grams of ammonium carbonate and 37.5 grams of ammonium nitrate are applied to each cubic meter of water. Apply once every 5 days, and the amount used is half of the initial amount. After adding yeast, expose the pond water to the sun for 1 to 3 days, and then you can put in Daphnia for seeding. The amount of seeding is 30 to 50 grams per cubic meter of water.

4. Fishing

After 15 to 20 days of being in the pond, Daphnia species will multiply in large numbers and cover the entire pond. At this time, you can scoop them up in batches to feed the fish. Generally, you can scoop them up every 1 to 2 days, and scoop up 10% to 20% of the total amount each time. In an environment where the water temperature is 18℃ to 20℃, you can scoop them up frequently and continuously.

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Here are some more questions and answers about how to breed Daphnia

How do Daphnia reproduce?

Tools for raising Daphnia

Container, green water, Daphnia species

Here is how to make green water

The most suitable environment for the growth of Daphnia

Green water - contains algae suitable for the growth of Daphnia. Algae is the main food of Daphnia and Daphnia eats floating matter.

There are several ways to make green water:

1. Use the water from the fish tank

2. Add a little urine to clean water

3. Add liquid fertilizer (Huabao No. 4) to clean water

Leave it under a light source (sunlight or fluorescent lamp) until the water turns green. During this period of time, the pH value of the water will become acidic, which is not suitable for adding Daphnia.

Green water needs a small amount of water change every three to five days. At this time, you can remove the water fleas and filter them for the fish to eat.

Aeration - As the oxygen content in the water increases, the density of Daphnia will also increase

Please use a small amount of air through the air tube to inflate, air stones will have the opposite effect. Daphnia like to grow in static water, but a little water flow can increase its chances of foraging.

Daphnia have no special requirements for oxygen content and grow better in water with high oxygen content.

Containers with larger surface areas may also be used.

Water pH - Most Daphnia species will thrive in water with a pH of 7.2-8.5.

Green water will continue to become acidic, so you must continue to change the water in small amounts.

Water hardness - Daphnia prefer to grow in hard water.

You can add coral sand to the water to keep the water slightly alkaline or increase the water hardness.

Coral sand releases calcium, which is very helpful for the growth of Daphnia.

Water temperature - Daphnia survive in water at 20-25 degrees

When choosing a breeding tank, be careful. If you want to place it in direct sunlight, choose a light-colored container. The larger the container, the less likely it is that the temperature will rise rapidly.

In winter, a small amount of Daphnia can be moved back indoors for breeding. Only after the temperature returns to normal will Daphnia produce seeds.

Water changes - it is best to change the water in small amounts and frequently

You can use green water, well-maintained water, or water that has been replaced in the fish tank.

But please do not add large amounts of fish waste, as excessive organic matter will cause the water quality to change quickly.

Minerals - Adding a small amount of coarse salt to the water can help growth

But only a very small amount of coarse salt contains the minerals that Daphnia need.

Do not use distilled water or reverse osmosis filtered water, as both lack minerals.

Food of Daphnia

yeast

It has a complementary effect with green water, but it is okay if it is not good.

Any commercially available yeast can be used. Add a small amount to warm water, stir, and pour into the Daphnia tank.

The less the amount, the better. Green water can provide enough nutrients, and yeast is just an additive.

When there is no more milky color in the tank, it means that all the fish have been eaten.

Organic matter

You can soak a small amount of dry chicken manure in green water without Daphnia grazing. After it ferments for a few days, add a small amount to the Daphnia tank.

The less the better, because if it is not handled properly, it is easy to overturn the tank.

Baby Food

Foreign literature mentions that Daphnia can be eaten as baby food.

Similarly, stir with warm water and add to the Daphnia tank.

Flour, milk powder, milk, Yakult, etc.

These are the things that become plankton in a Daphnia tank.

The reproduction method of Daphnia is very simple

1. If you have obtained Daphnia from the Internet or from a fish friend

2. Prepare a large foam box, fill it with water, and leave it there for two days.

After two days, pour the water fleas in. Then you can feed them once a day, twice a day or once every two days.

Remember that the best water temperature for Daphnia to reproduce is about 21-28 degrees. If the water temperature is too high, they will die, and if the water temperature is too low, they will reproduce slowly.

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You can use straw water, rice washing water, or green water for goldfish, but green water is the best. The fish worms cultivated are bright red and full.

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There is another way to make green water. Take some soil, put it in a container, add water, and then put a small amount of earthworms (nematodes). Don't put too much, or the water will stink.

Whether it is an earthen pond or a mud pond, yeast and inorganic fertilizer mixed culture method can be used. 20 grams of yeast are added to each cubic meter of water. The yeast can be soaked in water for 3 to 4 hours before being poured into the pond. 65 grams of ammonium carbonate and 37.5 grams of ammonium nitrate are applied to each cubic meter of water. Apply once every 5 days, and the amount used is half of the initial amount.

Fish worms are also called water fleas. They are mainly distinguished by size and color. There are green worms, green worms, and rice worms. Green worms must be used in summer, and green worms and rice worms can be used in spring and autumn. Water fleas mainly filter and feed on organic matter in water, such as milk, flour water, etc. Don't add too much when feeding. As long as there is enough water, they usually won't starve to death. But if too much organic matter is added, the water quality will be quickly damaged.