I have a 10 gallon fish tank and I went out and bought all the accessories today for it. I was planning on buying one of those little scenery things that you put on the back wall of the tank... but I forgot all about it... anyways, I was wondering if those things stick on the inside of the tank or the outside... because I want to setup the tank and get all the water in it and stuff, but I still want one of those backgrounds and I doubt I could put it on if it sticks to the inside of the tank (with the water there).. so do they go on the inside or the outside?
