FriendsNotFood. Jun 27, 2012. #11. I use cheap spray glue normally. Cover the tank with a towel so none can get in and just go for it. The bond is strong enough to hold the background on, but light enough to easily peel off. And the glue comes up like a thin rubbery coating so it's easy to peel off excess.. 59 393 302 147 367 9 147 198