So I am setting up a new tank. A 93 gallon cube. Instead of trying to fit a sump under my stand, I wanted something with more water volume. I will be using an Aqueon model 3 sump and I am going to plumb it through my wall and into the storage area behind the wall, in my basement. I am going to be using a 400 halide for this tank and I know there will be heat. So... my thoughts are to put the sump right on the concrete floor and use that as a heat sink. My question is.... ON the concrete floor? Or should there be some sort of padding under the sump? Thanks in advance!