Posted 9/11/2013 12:55 (#3321783 - in reply to #3320935) Subject: Re: which waterer?
southern MN
Nothing to defrost on mine, kick with your boot or a ball peen hammer to break up the ice skin on top, make sure the float can float, and check again in 24 hours, not much to it. Depends how many critters are using it, and more on windchill than actually air temp, doesn't often ice over that bad.