Am I doing something wrong/missing something?

[andrewross8705]

I poked some holes in the lid and set up the CHE on a reptile lamp stand above it. And with a dimmer all the way up (so its on the lowest heat emission), it raises the ambient about 5F.

When you say dimmer all the way up do you mean all the way down so it's putting out as little heat as possible while still being on? I was thinking of something like this for the CHE.