Some people may not like the way I did the "sideways" tubs but I didn't want the unit to stick out from the wall 3 feet so I turned the big 41qt tubs sideways....so far it is most efficient, heats well, all temps and humidity are PEEERFECT!!...
I think the sideways tubs are fine. The snakes will show you when they are to hot if the stay at the front of there tubs all the time. Great rack.