bottom filter fish tank is not fixed. Some need to change twice a week, and some need to change only once a month. The cycle of changing water still depends on the maintenance of water quality. If the water quality is maintained well, there is no need to change it too frequently. If the water is not good, it should be changed frequently. Either way, the water should not be changed too often, as the new water will irritate the fish and other organisms in the tank, thus affecting their growth.
of changing water? 1. Maintain water quality: The primary benefit of changing water is to maintain water quality. Not changing water for a long time will lead to the aging of water quality, so that the content of ammonia nitrogen will increase, and fish will be easily poisoned. According to the maintenance of water quality, the water should be changed once a few days to a few weeks, about a quarter of each time.
2. Increase dissolved oxygen: The level of dissolved oxygen is very important for the breathing of fish. If there is no additional oxygenation equipment, it is necessary to increase the oxygen content in the water by changing the water. It should be noted that this way of improvement has little effect, raising small fish is no problem, big fish is not enough, or need oxygen pump to supplement.
3. Disease prevention: Frequent change of water can also prevent the occurrence of diseases. Changing water can reduce the content of harmful bacteria in the water, so as to avoid fish getting sick, but changing water too frequently can also stimulate the fish body, and if there is a stress reaction, it is often harmful.
