Aqueon aquarium risers

We designed these risers to lift our Aqueon aquarium (used as a terrarium) a specific height above the table to leave room for a pie tin (or similar) that is holding up a reptile heater -- the kind that sticks to the glass. The stickum wore out, so we use this trick. Even with the stickum, it's nice not to have the heater so close to your table surface. Before this we were using ugly 2x4s.

I just wanted the aquarium to rest on top of these, but they're just snug enough that they will stick on the corners, and I like that even better.