What type of UTH did you buy?

MOST brands of UTH's get too hot and need to be controlled by a thermostat or herpstat.

So far though, you've done pretty well for a first time owner. Don't forget the hides! :]

Also, make sure the 'locking' on the tub doesn't allow you to lift up any space on the sides or pull it off with little effort. If it does you can get some heavy duty large paper stack clips to clamp it down. :]

Drill/melt holes into the side of the tub too.

Ok, I'm tired and done. Good luck!