Benefits of raising duckweed in fish tanks: 1. It can provide shade. 2. When the fish tank is short of food, it can be used as food for the fish. 3. It can also increase the oxygen content of the fish tank. Disadvantages: 1. The reproduction speed is fast, it will completely cover the fish tank, hinder the exposure of light, and it does not look good. 2. Duckweed will respire at night, causing the amount of dissolved oxygen in the water to decrease.

Tip:

When raising fish, if you want to put some duckweed, be careful not to put it in too large an area, and it is not suitable to put duckweed in hot weather and thunderstorms, as it will cause the dissolved oxygen in the water to decrease. It is best to fish out the duckweed to prevent the consumption of oxygen in the water.