I am hopping on...the self leveling cement really sounds like a good idea. My stand is very similar to yours and I am concerned about making it level.
What I really want to hear about is the Tunze vs. CL issue. One of the Sequence pumps I was going to use went TU and I need to decide what to replace it with. It appears that Tunzes use considerably less electricity and add heat. What I can't find is an amp number on them.
Benefits of Tuzes seem to be infinite placement opportunities (which may be the single most important item), and lower energy consumption. They also require no plumbing. The problem is that they cost quite a bit more than the Hammerheads.
Benefits of Hammerhead are that it is industrial strength continuous duty, high power, and easily maintained.
What else should I be looking at? Any more discussion on this topic?
My display tank is 8' x 5' x 35".--J