Hi, new member and bp owner! This past week, in the worst of the winter, I've had problems keeping my ambient temps up on both sides just using a UTH. I already had a heat lamp around the house anyway, so I decided to set that up as well and raised the temperature on my hot side between 90-92. Is it safe to use both heating sources? I know how important belly heat is, but my ambient temps aren't quite where they should be, about 80 or slightly below on the cool side and early 80s on the hot side.