Should I shim my stand?

[morgan1965]

I'm setting up a 390 gallon 3/4"acrylic tank. The stand is steel and is similar to Sidewinder 770's, with a 3/4" plywood top. My plan is to put 1" thick styrofoam between the tank and the plywood top. I put the stand in place last night (floor is a concrete slab). The stand is 96" X 30". Along the 96" length, the stand is perfectly level. However, along the 30" depth, the stand is out about 1/8".

Questions: Will the 1" styrofoam absorb the 1/8", resulting in a level tank? Is 1/8" over a 30" span even worth worring about? What should I do?

[Bill Wann]

Is it unlevel at the floor ?
My 1500 was way um level at the floor and all i did was get it level and fillend the gap between th efloor and the steel stand with an epoxy that comes in a caulk gun . worked great .