How Do I Prevent Leaves and Insects Getting Into My Tank?

A simple way to prevent mosquitoes breeding in your tank is by screening the inlet and overflow of the tank. These have a fine stainless steel screen inside them that mozzies can’t pass through.

Do not even consider putting liquid paraffin, kerosene or vegetable oil in the tank. Leaf strainers and gutter guards will protect against leaves and other debris flowing into the tank.