Tank doesnt leak accordimg to seller. I said it might beacause me moving it up some stairs by myself.
Ok, for bracing would just framing the inside with 2x4s be good?

Looks like the old "Light Granite" Oceanic tanks. We used to have 2 -110 gallon, a 75 gallon, and a 90 gallon aquarium in that color. Those tanks were HEAVY.
Looks like the old "Light Granite" Oceanic tanks. We used to have 2 -110 gallon, a 75 gallon, and a 90 gallon aquarium in that color. Those tanks were HEAVY.