

The floor SHOULD be able to hold it just fine, but there are never any guarantees with setting up larger tanks unless it's on concrete. As for your stand it looks like it's standard build for tanks that size but if you're at all concerned then add some 2x4 framing to the inside for extra strength. When I got my 110 tall I did this to my stand which was only rated for 75/90G tanks. It's been over a year and also contains 250# of sand/rock and the tank is still solid. You can see some of the framing I added on the sides and there is also one in the center of the stand too.
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