Today, change the filter for the fish tank. Why is it changed? The water is getting dirtier and dirtier
After you put on the new filter cottonPump water into the filter box, the impurities into the fish tank again
Causing transient turbidity after filtration for a period of timeThe water will be clear
This is only a temporary phenomenon,The reason is when you pick up the filter cotton,By the way, it stirred the impurities that had fallen silent in the filter box
