AKWA suction cups for heaters 2pack
Suction cups are used on your glass aquarium to hold your heater in place.
How Do You Get Suction Cups To Stick In A Fish Tank?
The best way to get suction cups to stick is by placing them on the glass when the aquarium is dry.
When you apply a suction cup in a full aquarium, water that comes into contact with the inside of the cup can cause air bubbles, which prevents the suction cups from creating a strong seal.