Quote Originally Posted by mpkeelee View Post
also, if u dont have ur tubs sitting right on the heat source then u have to turn up ur thermostat so that the air between the tub and heat source gets hot enough and gets ur tubs to the appropriate temps.
I agree, it's not a big deal but I prefer directly on the flexwatt.

If the tub scratches the flexwatt too much then it would need to be replaced, but I've sat my tubs directly on the flexwatt for over 2 years now and none show any signs of usage other than some very minor scratches.