I have a 36x10x12 tank that was already set up when I bought it. When it was set up at the LFS, the heater was placed in one of the corners in the back of the tank. Is there a reason he had it placed there? I've moved it to the back wall in the center of the tank, because I think it makes more sense to have it as close to the center as possible, especially on a tank that is long and skinny like mine. Should I move it back or should it be where I moved it to? Thanks in advance.

