Just so you know, when wwitb333 sees your new forum av she'll fangirl squeal. ha ha. :)
It's a great movie btw. and thanks for the advice! I'll be sure to monitor the area around the heater after I put it in the ck.
I use them, but don't use heaters with them. My room is kept a toasty 80 degrees thanks to my snake tank heaters, but I don't think other people've had problems with heaters and CKs. Just make sure you keep an eye on them, and shut off the heater if it's looking iffy.
BTW just curious, do you happen to use "Kritter Keepers"/"Critter Totes" as fish tanks?
I just purchased one and hope to use it successfully as a 3 gallon NPT.
If you do use them, does the heater have any problems with the acrylic sides? (melting or whatnot?)