I have just bought a latex aquarium background for my new tank. It looks a little like this: http://www.petluvers.com/media/Th_a1750.jpg
I have to use silicone glue to glue it to the back of the tank. I have heard some bad things about these, namely that they can trap bad/old water behind them and that may breed bad bacteria which can kill my fish, any suggestions, insights about this? Any help would be greatly appreciated.

