I will try using the board insulation on the sides, good idea.

It is on the floor, and only because I'm running out of room for tanks and this one is wider than my dresser- lol. We have a stand in the planning.

What brand CHE do you use? I gave up on them, I tried a flukers brand, a store brand, and one called fuxion (I think), none of them lasted more than a couple days. I swear if it screws into a socket- it comes to my house to die. I haven't tried those with this tank however those were all tried on some of my geckos.