I read that if you float a ping pong ball in an open waterer it will keep the surface from freezing longer.
My waterer (until today) has been a 2 gal cooler with a brite tap. I would take it in every night. In the morning I'd fill a stainless steel bottle with hot water and drop it into the cooler of room temp water before bringing it out to the coop. System worked well to keep water unfrozen. Only have had to add warm water at lunch a few times so far this winter.
However, the nipples DRIPPED......A LOT..... and I don't want my girls' feet/combs wet, so we built a horizontal nipple bucket waterer we saw here on BYC. It has a bird bath de-icer and is on a thermocube. Just put it out today so I can't comment on how well it works, but .
My waterer (until today) has been a 2 gal cooler with a brite tap. I would take it in every night. In the morning I'd fill a stainless steel bottle with hot water and drop it into the cooler of room temp water before bringing it out to the coop. System worked well to keep water unfrozen. Only have had to add warm water at lunch a few times so far this winter.
However, the nipples DRIPPED......A LOT..... and I don't want my girls' feet/combs wet, so we built a horizontal nipple bucket waterer we saw here on BYC. It has a bird bath de-icer and is on a thermocube. Just put it out today so I can't comment on how well it works, but .