Quote Originally Posted by gwentennyson View Post
Thank you so much! I will make sure to get a thermostat before applying the UTH then. So as long as I have aluminum foil between the UTH and the bottom of the plastic of the tank, that will be okay?
If you place the uth on a piece of glass it will still make the plastic just as hot. It will probably even be a couple degrees warmer since it has an extra layer to get the heat to penetrate. If it is good quality plastic you should not have any issues. In most rack there is flexwatt(heat tape) that is used for uth. The tubs are plastic and as long as the uth is controlled by a tstat the plastic will be fine.