of changing water in the bottom filter fish tank is different from other fish tanks. There is a water hole at the bottom of the fish tank, which can be controlled by the drain valve. Connect the water pipe at the drain hole, then turn off the water pump, drain the water inside, and then add water to the bottom tank. If there is no drain hole in the fish tank, you need to change the water directly in the main tank, use the pipe to pump out the water, and then use the pump to add water to it.
should we pay attention to when changing water? 1. Pay attention to the frequency: The first thing we should pay attention to when changing water is the frequency. If it is too frequent, the new water will stimulate the fish to a certain extent, which will lead to its stress reaction. Usually it can be changed once a week, and if the water quality is well maintained, it can also be changed once a half month.
2. Pay attention to the amount of water: Every time you change the water for the fish, you must control the amount of water, usually not more than one third at most, less than one fifth. If the water is changed more frequently, the amount of each change should not be too much, so as to avoid the stimulation of fish, if the water is not changed frequently, it should be changed a little more, so as to maintain the water quality.
3. Pay attention to the temperature: As a poikilothermic animal, fish has certain requirements for temperature change. If the temperature difference is large, it will also cause it to get sick. Therefore, it is better to keep the same temperature before and after changing water, so as to avoid the health of fish being affected.
