[GarterGuy]

I use heat lamps for heat, but I turn everything off at night. I've found that the garters do just fine with night temps. into the 60's with out any bad affects at all......as long as they can then heat back up during the day. I've even heard that it's good to have them "cool" off at night and have some down time. My room has gotten down into the low 60's and everything's done great for me.