The water net algae mostly occurs in the shallower fish ponds that are relatively fat, and the algae are assembled, such as mesh belts. Freckles often enter the net and die due to breathing and feeding difficulties. Control method: clear the pond with quicklime before putting the fish, the amount of fish pond is 7.5 kg per acre of depth. If water net algae occurs, the copper sulfate solution may be used to sputter, so that the water concentration is 1.510-6. Sponge hydroponic floating in the water when the formation of mass tangled mess, affecting the increase in water temperature and increased dissolved oxygen, and a large number of nutrients to make pool water thin, affecting fish growth. Control method: Use quicklime to clear the pond before putting the fish. The amount of fish pond 1 meter deep per acre is 5 kg. After the occurrence of the spongiosa, the whole pool of copper sulfate solution can be used to make the water concentration 0.710-6. After 2 hours, it should be replaced with 1/3 of the new water. Can also be used per acre 1 meter depth of the fish pond with prometryn net 150 to 200 grams, mixed with wet soil sprinkled on the sponge. Microcystis aeruginosa and Microcystis catarrhalis mostly grow in the hot season. When the growth is too high, a large number of deaths occur due to the lack of dissolved oxygen in the pool. Rapid decomposition of the dead algae can produce a large amount of harmful substances, which can easily cause fish death. Control methods: 800-1000 kg of organic fertilizer is applied to fish ponds with a depth of 1 meter per acre before fish release. At the beginning of these two kinds of algae, tilapia up to 1000 can be stocked in a fish pond 1 meter deep per acre, and copper sulfate solution can also be used to splash the entire pond. Tetramisole Hcl,Albendazole Bolus,Multivitamin Premix,Diminazene Diaceturate NINGBO VOICE BIOCHEMIC CO. LTD , https://www.pharma-voice.com