Several types of water quality for koi ponds (the key is still a good pond filtration system)

1; Clear water for fish . Clear water is water that is transparent, colorless and odorless. When fish are kept in this type of water, they will eat a lot and grow extremely fast. Using clear water to raise fish in summer can avoid hot tail. The disadvantage is that clear water is not good for fish coloring. Keeping fish in clear water during the rainy season will cause irritation to the mucus of the fish's skin and cause the fish to develop diseases. I keep goldfish with fry in spring and juveniles in summer using this clear water.

2; Green water is tender green water. Clarified, transparent, water slightly green. Green water has a large number of beneficial bacteria. Fish grown in this kind of water eat a lot, grow fast, and the fish body is also colorful and resistant to disease. But the beauty of it is that you have to be careful to prevent hot tails in the summer. I use this water for my breeding fish in spring and fall.

3; Old water is deep green water water. It is suitable for pressing fish in winter. Fish don't eat much in the winter, and fish in old water can keep their body fat to ensure that goldfish can safely survive the winter and be ready for the breeding of goldfish in the coming year.