Quick question. I'm just now getting around to setting up my thermo-hygrometer. i only bought one for each enclosure, then i wondered should there be two? and how exactly should they be set up? right now i have them set up on the warm sides of the tank, but should they be in a more neutral location? should the humidity gauge be on top of the substrate or below?

what is the purpose of heat tape and when would you use it?