1, save feed: fertilization is very good, the plankton inside will be a large number of reproduction, and the shrimp are very fond of eating plankton, so it will save a lot of feed.

2, increase dissolved oxygen: the pond will also grow a lot of phytoplankton inside the phytoplankton, after photosynthesis, can release a lot of oxygen.

3, shading the bottom of the pond: more phytoplankton inside the pond, you can shade the sun, to the shrimp to play the effect of shading.

4, if the color of the water becomes green, or brown, it means that the pool of water is very fat. At this time, the transparency inside the pool should be 41 centimeters, the lowest can not be below 19 centimeters, and the highest can not be above 98 centimeters.

5, fertilizer method: you can mix calcium superphosphate and urea, 1 cubic meter with 6 grams to 16 grams of urea, with 1.6 grams to 4.1 grams of calcium superphosphate.