hello, I have a 67 gallon terrarium I'll be setting up for a leopard gecko which has the floor dimensions of 36"x29" and I'm getting the zoomed 50-60 gallon heat pad for it. I will be placing it in the back right corner, and the tank will have a foam background, but what I'm wondering is, what do i put on top of the heat pad? The humid hide? Warm side hide? whhaaaaaa