from my experience...
the worse thing to place a tank on, esp a large one, is first carpet, then hardwood. spills are 100% guranteed and no matter how studious you are...water will creep under the stand and wreak havoc on the flooring.
okay, over with the johnny raincloud...
best thing to do is: call a hardwood finisher. explain your situation and listen to what he has to say. if ness, spend a few pennies on his recommended course of action (get a second opinion if it sounds outlandish) and have that piece of mind.
best flooring material for a big fish tank?
inside the house...ceramic tile! travertine and marble is an okay choice but are in need to be refinished and sealed every so often. i have marble because i love to look. just be careful if you spill water on it...can you say fractured skull from falling?
outside the house: good ol' concrete floor!!! all my equipment is located in the garage so i really have little...actually, no concern about water spills, floods and whatever havoc that comes with having two 100g sumps.
regardless of how careful i am in the house working on the main display, i ALWAYS manage to spill some water on the floor. don't fool yourself into thinking that you won't or will clean it up right away...cuz you will and you won't!
