It was noted by Bob @ proproducts when I bought my RHP to use a piece of 1" foil faced insulation underneath my enclosure to help w/ heat loss and electricity costs. Does anyone else subscribe to this theory? I have some 1" styrofoam that I can use or does foil faced insulation work better? And does this look unsightly underneath the cage?? FTR, I have a AP T10 pvc enclosure. Thanks.