Quote Originally Posted by Sonya610 View Post
Might not want to peel off the sticky tape and actually adhere it to the glass. Once stuck on the glass the UTH usually can't be removed all that easily without having problems and maybe broken wires afterwards. Don't stick it on just use cardboard or whatever to get it up against the glass and yeah...use a thermostat.

I have heard when snakes feel "too warm" their natural inclination is to burrow deeper to avoid the sun so maintaining safe UTH temps is important.
It was my first tank, so the UTH is already stuck to it, but I'll keep that in mind if I get another glass tank. For my plastic tubs I just used heat-resistant tape to keep them there. I also didn't know that snakes would burrow down if they're too warm, I figured they'd move away from the heat.