Back at the questions again.. SO I just moved about a half hour away from my old house. Move went fine and I have a 20 gallon long tank for my guy. I have a heat mat connected to a herpstat 1. The hot side is 92F but the cold side shows 72-74F. Im using a acurite thermometer from walmart. Is this ambient temp too low? If so how can I raise it. Its only a 20 gallon long so I dunno why the heat isn't retaining.. Please help! thank you for reading