1、Harm of ammonia

Excessive feeding will produce ammonia. The existence of ammonia will cause considerable harm to fish, aquatic plants, corals and even all organisms in the fish tank. As long as the safe concentration (about 0.5 ppm) is exceeded, it may cause biological death.

2. Culture aerobic bacteria

Nitrifying bacteria can transform ammonia into nitrite which is still toxic through nitrification, and then transform nitrite into nitrate which is quite low toxic, so as to keep organisms away from the threat of life. Because nitrifying bacteria will consume oxygen in the tank at this stage, some players call nitrifying bacteria aerobic bacteria. If nitrifying bacteria can grow smoothly in your fish tank, it is believed that the fish will not die of poisoning.

3. The necessity of anaerobic treatment

The growth of aquatic plants also needs nitrate as fertilizer, but as long as the concentration is more than 50 ppm, excessive nutrients in the water may cause the phenomenon of algae crossing, and may cause the slow growth of organisms. Therefore, in addition to cultivating nitrifying bacteria in the fish tank, we should also cultivate anaerobic bacteria to carry out the so-called "denitrification", which converts nitrate into nitrogen and releases it into the air, so as to control the nitrate in the tank at a certain value.