tank is to choose a good fish tank. It is better to use a wide-mouth fish tank, because this kind of tank can not install water pumps and oxygen pumps, so the dissolved oxygen in the water body is very difficult to supplement through the equipment. Therefore, in order to ensure adequate oxygen, we must use a wide-mouth fish tank to raise fish, so that the contact area between air and water is relatively large, but also to ensure that dissolved oxygen will not be too low.
because the fish tank is not filtered, the effect of maintaining water quality is relatively poor, so only some adaptable fish species can be raised, and this kind of fish tank is usually small, can not raise big fish, can raise goldfish, Guanbei medaka, white cloud gold wire and so on, tropical fish can not be raised, because the temperature can not be controlled. Moreover, attention should be paid to the feeding density, and too much feeding is also prone to problems.
regularly. In order to ensure the health of the fish, the round glass tank should be changed regularly. Since there is no water pump, the siphon method is used to change the water. Prepare a hose, put one end to the bottom of the fish tank, the other end to the outside, and then suck from the outside end to let the water flow out, if it does not flow out, it means that the position is too high.
