One, dredging, exposure, cast lime sludge sediment environment

The requirements of every 2-3 years 1 times if not the sludge, sludge removal, should put dry water exposure and frozen sludge, silt become dry, loose, not dry pond should be pumping water to about 10cm per mu, with 100-150kg lime pond sprinkle over the whole pool, with the rake to sediment plowing 1 times the mud and lime, fully mixed, so as to promote the oxidation of organic matter in sludge decomposition, kill fish parasites and pathogens, improve pond ecological environment, to create conditions for the improvement of water quality and improve dissolved oxygen condition.

Two, the use of microbial agents, control of improved substrate and water quality

In the high temperature season, the application of photosynthetic bacteria, bacillus, nitrification bacteria, EM bacteria liquid and other microbial agents, the establishment of a healthy pond micro ecological environment, purification of water environment.

Three, the scientific feeding control, fish species collocation

According to the total quantity of feeding and fish size, determine the feeding amount per month, according to seasons, weather, water, fish and other activities, to determine the daily feeding amount, feeding the fish to eat 80% to follow the principle of full, so as to achieve the purpose of reducing the residual bait. We should eat food and scientific collocation of filter feeding fish delivery number, in order to control the growth of plankton blooms, usually put 80% of the feeding of fish, put 20% collocation of planktivores, achieve a virtuous circle of ecological environment and water resources reasonable use of aquaculture science

Four, the use of aerator aeration for improving water quality

Increase the dissolved oxygen through the aerator, maintain excellent water environment, high dissolved oxygen consumption can be oxidized to release H2S sludge and other harmful gases, and can inhibit the growth and reproduction of sulfate reducing bacteria. Whether in the sunny noon should generally be 11 to 14 regardless of the fish floating head boot water stirring water, promote the flow of the pond, the water with high dissolved oxygen and low dissolved oxygen in water, increase the amount of total dissolved oxygen water pool.

Five, regular add fresh water, sprinkle lime

In the growing season of June to September of fish, 10 days should be discharged water refilling water 1 times, each time changing the water around 30cm, keep fresh water, dissolved oxygen of water. Can every 10-15 days applying lime 25 kg / mu, keep the water was alkaline, promote the mineralization of Nitrate Nitrite, reducing nitrite lag, accelerate organic water precipitation, increase the transparency of water and photosynthesis, thereby improving water quality.