First, take care of the water when raising fish. If you want to raise fish well, you need to observe the color of the water to distinguish the quality of the water and determine whether there is an impact on koi fish, so that effective measures can be taken to improve the water quality. In this way, it will be more conducive to the healthy growth of koi fish in koi fish farming.
1. Observe the color of the water quality. If it is yellowish-green and clear, it is good water. The water body of this color indicates that the shade of the water color is moderate, and the main algae in the water body are diatoms, followed by green algae and Euglena.
2. Observe the color of the water quality. If it is grass-green and refreshing, it is good water. The water body of this color indicates that the water color is relatively thick, and the main algae in the water body are green algae and Euglena.
3. Observe the color of the water quality. If it is oily green, it is good water. The water body of this color indicates that the degree of fertility and thinness of the water quality is moderate, and this kind of water color is relatively common in water bodies where organic fertilizers are applied. The main algae in the water body are diatoms, green algae, dinoflagellates, and cyanobacteria, and their quantities are relatively balanced.
4. Observe the color of the water quality. If it is tea-brown, it is good water. The water body of this color indicates that the degree of fertility and thinness of the water quality is moderate, and this kind of water color is relatively common in water bodies where organic fertilizers are applied. The concentration of humus in the water body of this water color is relatively high, and the main algae in the water body are diatoms and Cryptophyta, followed by Euglena, green algae, and dinoflagellates.
5. Observe the color of the water quality. If it is blue-green, gray-green and turbid, and a grayish-yellowish-green floating film often appears on the water surface on the leeward side of the pond when it's hot, it is bad water. The water body of this color indicates that the water quality of the water body is aging, and the main algae in the water body are cyanobacteria, and they have an absolute advantage in quantity.
6. Observe the color of the water quality. If it is gray-yellow, orange-yellow and turbid, and there is a floating film of the same color on the water surface, it is bad water. The water body of this color indicates that the water color of the water body is too thick and the water quality is deteriorating. The main algae in the water body are cyanobacteria, and they have started to die in large numbers, which is not conducive to the growth of koi fish and may also lead to diseases of koi fish.
7. Observe the color of the water quality. If it is grayish-white, it is bad water. The water body of this color indicates that a large number of plankton in the water body have just died, the water quality has deteriorated, and the water body is seriously short of oxygen, often with the danger of pond water turning over.
8. Observe the color of the water quality. If it is dark-brown, it is bad water. The water body of this color indicates that the water color is rather old and close to deterioration. It may be caused by the application of too much organic fertilizer, and the content of humus in the water body is excessive. The main algae in the water body are Cryptophyta, followed by cyanobacteria and Euglena.
9. Observe the color of the water quality. If it is light red, and the color is often unevenly distributed in shade, it is bad water. The water body of this color indicates that there are too many water fleas breeding in the water body and few algae. The dissolved oxygen content in the water body of this water color is very low, the phenomenon of water transformation has occurred, and the water quality is rather thin.
10. For brown water, the brown water formed in the early stage of fertilization is good water, while the brown water that changes from other water colors in the middle and late stages is bad water.