Yeah, they are expensive :/ I haven't been able to purchase one yet, so until I can, I'm using a dimmer. But you should definitely get a temp gun! And yes, just adjust the dimmer until you get the correct temperature readout. Just make sure you check the temps under and on top of the substrate because (although they often don't) they can burrow/move the bedding and reach the surface of the glass, wouldn't want a burned belly!![]()