Anaerobic fish tank is not literally a fish tank without oxygen, where anaerobic means no oxygen supply device. This kind of fish tank does not need to be provided with oxygen by external devices, such as some oxygen supply devices and filtration devices. It depends on the dissolved oxygen in the water and the ecosystem composed of nitrifying bacteria and green plants to meet the oxygen demand of the organisms in the fish tank. Fish live in anaerobic tanks, and most of their oxygen is provided by dissolved oxygen in the water.
Anaerobic fish tank can raise guppies, but need to meet some conditions. First of all, the density of aquaculture should not be too large, otherwise it is difficult to ensure the normal breathing of guppy only by the dissolved oxygen in the water. If the fish are anoxic, they need to be fed separately. Secondly, we should ensure the cleanliness of water quality. Unclean water has very low oxygen content and can breed pathogens, which can be harmful to the health of fish. The temperature of feeding should not be too high, and it is better to control it at about 22 C. If the temperature is too high, it will also reduce the dissolved oxygen in the water. As long as the oxygen content in the water can meet their breathing needs, they can use anaerobic fish tanks to raise guppies.
