Tip - What Kind of Silicone Can I Use on an Aquarium? | eHow

Silicone is used on an aquarium for sealing leaks, repairing tank ornaments and joining rocks together to form caves and towers. Silicone can be used for aquariums as it stays flexible and does not crack or shrink. It is important to use silicone without mold inhibitors as it can leach chemicals into the water that could harm or kill the fish. Many...