Why does fish water stink?

The fishy smell of fish water is caused by the deterioration of fish manure and the sinking of leftovers into the bottom sand. It can be decomposed by nitrifying bacteria, and activated carbon is added to the filtration system to deodorize. Or change the water in the fish tank regularly.

Tip: All animals are fed nutritious animal feed and white sesame seeds. Animal feed, such as Daphnia, earthworm, Tenebrio molitor, caterpillar, dust mite, etc. The main feed is earthworm and white sesame. Both red earthworms and black earthworms can be fed. You can feed raw white sesame seeds. White sesame seeds are easy to buy. Goldfish love to eat, easy to digest, and not easy to pollute the water. Don't feed inferior goldfish feed. Because this kind of feed has too much starch, poor nutrition, difficult digestion and easy pollution of water quality, goldfish will grow slowly and get sick easily after eating malnutrition. Goldfish will not die as long as they eat digestible food. When to feed, usually once a day in the morning and evening, it is not advisable to feed more until it is eaten up. Otherwise it will pollute the water body.