I am using a UTH and a lamp and my temps won't go up to the 90's. my digital probe says 83.5. Is this ok? My probe isn't on the glass anymore cause it was freaking me out saying 110 degrees. So I pulled it up and stuck it in the substrate. Super frustrating. I don't have a thermometer but I plan on getting one now. I don't think it will control the UTH? Like it isn't hot enough to penetrate the cypress. Please help!!