Tank leveling! help!

[Aqua67]

Do you set the tank itself on the styrofoam or the tank stand on it? Is the idea that the water will find level and push down the styrofoam more in one area than another to force a level setting? I'm about to set up a 75 gallon tank. I live in a townhouse built in the 1970s. It's ...mostly...level but i'm sure it won't be 100%- I will be setting the stand/tank on hardwood floor, so that part is good, but was wondering what I should do to ensure it's level. Lord knows I don't want all that water eventually on that floor .

I put the styrofoam under the cabinet-style tank stand and on top of the hard surface. In one instance I have a 5.5 gal on top of an actual cabinet and in that case I have a much thinner piece of styrofoam under the tank itself and above the table top. I have done this with my aquariums for years (different tanks, different houses, etc.) and it hasn’t caused me any trouble that I’m aware of. Have fun putting together a new 75 gal tank.