Setting up a 20 long for my daugthers so they can see G-BOY in the tank....i have 2 heat matts, 2 hides,2 thermostats,and 2 temperature gauges...the question is where should i put the probes.... on the glass on top of the uth or should i put it on top of the green turf and then cover it with cypress mulch...hope u get what i am trying to say....i dont want to put the cypress right onto the glass...he will move the cypress and then he will be right on the glass with the uth there...it might get to hot...thanks Richie....