I've got a 75 gallon tank that I just purchased and currently in the process of cleaning/making sure it does not leak. I live on the 6th floor of a new apartment complex, I was planning on putting it against one of the main walls. I have a matching wooden stand that came with it, and the tank has a center plastic piece for support. Do many of you keep tanks in higher floor rooms? Anybody think this is a safety hazard? Also, thinking of using pool filter sand as a substrate, is that stuff usually white/fairly lightly colored? Thanks!