Newbie here

. Is there somewhere on this site that has pictures of aquascaped tanks? I'd like some ideas for my 90 gallon. Also, is it better to put the rock in the middle of the tank for better waterflow around it or should I put it against the back. My 37 has it against the back and I've had to move everything to locate a missing fish (I've also got ALOT of rock in there, so......). Thanks