I'm going from a 240 cube to a standard 210. I want the 6' length and I'll be able to use 3 MH instead of 4. I'll also be able to get better flow throughout the tank with less power heads. I'm wondering about the steel stand on my tile floors and if it's going to crack the tile. Going in the basement so floors are tile on concrete. My last stand had a full wooden perimeter, this one has 6 legs. Think I'll have problems?

