the water quality of cement ponds? Salt or lime is usually used to treat the water quality of cement ponds. Before fish farming, 5 kilograms of salt per mu should be sprinkled on the whole pond. There can be a small amount of water in the pond, and the water level should not exceed 50 centimeters. Salt itself has the function of disinfection, and it can also be washed before stocking fish fry. With lime, the water depth needs to be about 1 meter, so that 15 kilograms can be sprinkled per mu, and the fish can be released to test the water one week after sprinkling.
cement ponds 1. Water injection and soaking: For dealkalization of cement ponds, if you do not want to use drugs, you can use the method of water injection and soaking. Fill the cement pool with water, and then soak it for half a month, during which the water should be changed every two to three days. The purpose of changing water is to take away alkaline substances. However, the cycle of this method is relatively long, and it is not necessary to raise fish in a hurry.
2. Calcium phosphate: Calcium superphosphate is easy to buy in the aquatic market, and its usage is relatively simple. First fill the pond with water, then add 1 gram of superphosphate per kilogram, then stir it evenly and soak it for two to three days. It takes effect quickly, but there may be a certain risk of drug residues.
3. Acetic acid: Compared with superphosphate, acetic acid is easier to obtain. Vinegar at home is OK. Its proportion is usually about 10%. After mixing it with water, wash the cement floor surface, and then soak it for a period of time. Generally, it needs to be brushed three times.
