yeah, I read that about cork tile. I got the tank from PetCo, and I don't know their policy, but I doubt they will take it back now that it's been set up and everything since it was a kit. I think as long as the frog is happy enough with that space I will stick with it until some day in the future I either decide to make a new one or we want another frog. Dh would probably kill me if I had to buy a bigger tank too.... I've dropped a lot of $$ already for such a small frog lol. The background is coming from Amazon, so I assume as long as I don't use it I can return it easily enough. I might go with a cling, I will just miss that naturalistic background look with depth and places to sort of climb around on.