Do I need to change all the water for the first time?

1. In the first week of opening the water tank to change water, keep the lighting for 5 hours every day, and change one-fifth of the water every two days or so. Nitrifying bacteria should be added after changing water. Of course, if the tank is opened with treated water, if it is opened with tap water, nitrifying bacteria should be added after the chlorine gas is gone, and it is best not to add liquid fertilizer in the early stage.

2. By the second week of can opening, it is necessary to increase the illumination time by one hour. The water change time can be changed to three days, and a quarter of the water can be changed each time. You can also set the lighting time according to the situation in the water tank. At this time, you can also add creatures such as small fish and shrimp.

3. Wait until the third week, and continue to increase the lighting time for one or two hours. You can change the water once a week, and the amount is still one third. At this time, you can add half of the liquid fertilizer.