The net of a fish tank with no lid is more likely to come into contact with dirt, dust, and other debris in the surrounding environment, which can potentially contaminate the water in the tank. On the other hand, the net of a fish tank with its lid on is protected from such contaminants, resulting in cleaner water for the fish. Additionally, a lid on the fish tank helps prevent fish from jumping out of the tank, reducing the risk of injury or escape.
