Hello! I have recently bought a 30-40 gal zoomed UTH. I was wondering is there a preferred method to control the heat? because right now it's wayy too hot..

also, I have the heater attached to glass, but one side of the cage is plexyglass. All 5 other side are also glass, but ONE side is a plexyglass door that i made. Is the OK? The heater is not directly touching the plexyglass.

any other advice is appreciated.

thanks!
Joe