The water is yellowish green and refreshing. It is good water. The color indicates that the shade of water is moderate and the algae in the water body are mainly diatoms, followed by green algae and bare algae. The water is green grass and refreshing, it is a good water. The color indicates that the water color is thicker, and the algae in the water body are mainly composed of green algae and bare algae. The water color is green and good. This color indicates that the water quality is moderate, and this kind of water color is more common in the water body applied with organic fertilizer. The algae in the water body are mainly diatoms, green algae, dinoflagellates and cyanobacteria, and the quantity is relatively balanced. The water color is yellow-brown and it is good water. The color indicates that the water quality is moderate and the water color is relatively common in organic fertilizer-applied water. The humic substance concentration in this water-colored water body is larger, and the algae in the water body are mainly diatoms and cryptophytes, followed by euglena, green algae and dinoflagellates. The water color is blue-green or gray-green and muddy, and the hot weather often appears on the water table at the side of the pond's wind to appear yellowish green floating membrane, which is bad water. This color indicates the water quality aging in the water body. The algae in the water body are dominated by blue-green algae, and the number is dominant. The water color is grayish yellow or orange and turbid. There is a floating film of the same color on the water meter, which is bad water. This color indicates deterioration of water quality. The algae in the water body are dominated by blue-green algae, and a large number of deaths have begun. The water is gray and bad. This color shows that a large number of plankton in the water just died, the water quality has deteriorated, the water body is seriously deficient in oxygen, and there is often the danger of flooding ponds. The water color is dark brown and it is bad water. This color indicates that the water color is older and nearer to deterioration, which may be caused by the application of more organic fertilizer, and the content of humus in the water body is too much. The algal species in the water body is dominated by cryptophytes, followed by blue-green algae and bare algae. The water color is light red, and the color is often unevenly distributed and is bad water. This color indicates that the blisters in the water are multiplying too much and the algae are few. This water-colored water body has a very low dissolved oxygen content and has turned into a water phenomenon with relatively thin water. For brown water, the brown water formed at the early stage of fertilization is good water, and it changes from other water color to brown in the middle and later stages. Hydrolyzed Sponge White Powder Sponge Chengdu Sino Tech company , https://www.cnherbfun.cn