1. if the water in the fish tank turns yellow after replacing the feed

, it is likely to be caused by the feed. If the quality of the feed is not good, the water will turn yellow after dissolution. In view of this situation, it is necessary to change the feed in time and choose better quality food, which will not pollute the water quality, but also help the growth of fish.

2. Pay attention to changing water

. If you don't pay attention to changing water at ordinary times, the water quality will gradually age and yellow. Usually, fish farming must change water. The cycle of changing water is not fixed, but it can not be too frequent. It can be changed once a week at most. If the water quality is well maintained, it can be changed once every two weeks, about a quarter of each time.

3. If the physical filtration of the

fish tank is relatively weak, the suspension of powdered food residues and feces in the water will also lead to yellowing of the water body. What we need to do at this time is to strengthen the filtration effect. First of all, the aging filter material needs to be replaced in time. At the same time, we need to check the filter screen. If it is not clean, we need to clean it.

When algae grow and reproduce in the fish tank, the water body is also easy to turn yellow. Although it will not do much harm when the number is small, we must prevent algae explosion. It is better not to put the fish tank in a sunny place, but also to control feeding, change water regularly and clean up the dirt at the bottom of the tank.