Quote Originally Posted by CptJack View Post
UTH's don't get anywhere near enough to melt plastic
Yes they do this is why they MUST be used with a T-Stat from the start.

I would not recommend Petsmart or Petco as a good source for any reptile supply, for heat pad or heat tape as well as thermostat this can be your one stop shop http://www.reptilebasics.com/

For a single stand alone tub I would recommend a heat pad and simply place the tub above it, if you tape it and need to clean the tub it's just gonna be messy and take longer.