this is what I did,I found some insulation that is 12" wide 2" thick and I forget how long,its got silver on 1 side,I just wraped my buckets with it cut a piece for the bottom and the top,now my temps are steady and dont go above 70 deg.I found this insulation at lowes in the section with the duct parts . its used to insulate ducting,there was also some stuff that had an adheasive backing but its more more money and to thin not enough r value for me.