why improving pond water quality in fish pond?
Before talking about how to improve pond water quality, let’s talk about why we need to improve fish pond water quality. Fish pond water quality directly affects the growth and health of fish, so improve fish pond water quality can reduce the occurrence of fish diseases and contribute to the healthy growth and development of fish, thus improving the economic benefits brought by fish farming. If the water quality of the pond is not good, it will cause a large number of fish deaths and bring heavy economic losses to the fish farmers. Any water quality parameter will directly affect the health of fish.
Shrimp and fish living in high concentrations of dissolved oxygen, ammonia, nitrite or hydrogen sulfide can cause stress and disease. However, water quality parameters also interact in the complex and variable environment of fish ponds. Imbalances in temperature and PH can increase the toxicity of ammonia and hydrogen sulfide. Therefore, maintaining a balance of water quality parameters is critical to both fish health and growth. So, how to improve poor water quality in fish ponds? Improving poor water quality in fish ponds can also improve survival rate of fry.
how to improve fish pond water quality
1. Enhance water injection and change
Regular water changes can ensure the purification of fish pond water quality, which is important for how to improve fish pond water quality. During the breeding process, there are many residual baits and dirt in the pond, and anaerobic fermentation produces ammonia, nitrogen, hydrogen sulfide and other harmful substances, which deteriorate the water quality of the breeding water, especially in the high temperature season. If the ability of the fish pond to maintain water quality is weak, you can shorten the water change cycle, but only every three or four days at the earliest.
If the fish pond is changed every day, the new water will be more irritating to the fish and may produce a stress reaction. Therefore, it is necessary to add water and change water to the fish pond regularly. In general, water should be added every 7 to 10 days at a depth of 20 to 30 cm each time. During the hot summer months, the water level should be kept as high as possible.
2. reducing density of fish
If more fish are kept, or if the pond itself is not large, then the culture density will become high and the water quality will not be easy to maintain. In this case, the best solution of how to improve fish pond water quality is to reduce the culture density. For example, if there are more than 10 inches of fish per 100 gallons of water, your pond is probably holding too many fish. Too many fish will produce too much fish waste, and too much fish waste will create an imbalance in the pond water.
3. Do not over feed fish
The main cause of deteriorating water quality is too much dirt in the water. This dirt is usually leftover bait and fish feces, which is caused by overfeeding. When you feed more than they can eat, the uneaten food rots in the pond. Be careful not to feed your fish more than twice a day or more than they can eat in 2 to 3 minutes. You should also choose high-quality fish food, preferably one that floats rather than one that sinks in order to improve fish pond water quality. If the fish do not finish the fish food, the sinking fish food will deposit and decay at the bottom of the fish pond, polluting the water.
4. proper oxygenation
Proper oxygenation is an important key to how to improve fish pond water quality in fish pond, according to the weather and fish feeding, activity, timely opening of oxygenation equipment, oxygenation equipment specific operational requirements are: open at noon on a sunny day, not open at night, open early in the morning on a cloudy day, open in the middle of the night on a rainy day, not open during the day, open floating head in advance.
During the peak fish growing season, it should be turned on daily to increase the dissolved oxygen in the pond and provide a comfortable growing environment for fish. When the oxygenating equipment fails, emergency measures can be taken to increase oxygen by spraying chemical oxygenating granules.
5. Remove contaminants from ponds before they rot
Leaves and twigs can fall to the bottom of the pond, along with fish waste and leftover fish food, and if these contaminants are not cleaned up in a timely manner, they can decay in the pond and cause ammonia levels to spike.
Ammonia is bad for your fish and should be addressed immediately. If you see your fish jumping out of the water, the ammonia levels in the pond may be peaking. You can buy an ammonia tester to test ammonia levels, and if you find high levels, to improve fish pond water quality with an ammonia neutralizer.
6. reparing the breeding environment
The whole fish pond should be sprinkled with live bacteria granules (main ingredients. Bacillus subtilis, nitrifying bacteria, denitrifying bacteria, sulfur bacteria, zeolite powder, calcium, sodium humate, oxygenating substances) at a dosage of 1 kg per mu of water depth of 1 m, once every 7 to 10 days. Transform ammonia nitrogen, nitrite, hydrogen sulfide, etc. in the pond into sulfate, nitrate and other substances used by phytoplankton, so as to restore the breeding ecological environment as soon as possible to improve fish pond water quality.
7. Transparent monitoring of fish pond water quality
If the transparency is too high, you can sprinkle rich algae (main components: organic matter, probiotics, polysaccharides, amino acids and nitrogen, phosphorus, calcium, manganese, iron and other elements) over the whole pond at a dosage of 500 to 2,000 grams per mu of 1 meter of water depth, every 15 to 20 days.
If the transparency is too low, you can splash chlorine dioxide (main components: chlorine dioxide, stabilizer, activator) in the whole pond to improve fish pond water quality, 1 m water depth per mu dosage of 100-200 grams, you can also take measures to refill new water.
8. Reasonable use of quicklime
Regular use of quicklime in breeding ponds can play an important role in purifying water quality, regulating ph value to improve fish pond water quality and preventing fish diseases. Generally, it is used once every 15 days, the dosage is 10-15 kg/mu, by adding water to slurry and splashing the whole pond while it is hot. If the acidity is too low, the whole pool is splashed with quicklime, the dosage is 10-15 kg per mu for 1 meter water depth, choose to use at 9:00 am on a sunny day, but not in the afternoon.
9. Use of biological agents
Regular use of photosynthetic bacteria, Bacillus, substrate improver, etc. in the breeding pond, through microbial decomposition of ammonia nitrogen, nitrite and other toxic and harmful substances in the water and pond bottom, is conducive to improve fish pond water quality and enhancing the immunity of the fish body.