Top middle of MO. land of green hills and grass | No sheep, but goats here are just as bad. Don’t drink the volume of water that cows do to keep fresh/warmer water coming in to them.
Had mirafounts that couldn’t keep thawed. Used a heat puck, heat lamp and heat tape to try to keep it going, still was an occasional fail when things got below 0
Put in a cobbet. Works, but gets a notable layer of ice daily, sometimes 2x unless you keep a good amount of critters against it.
Best option is a Jug. Very low heat demand. Mine are sitting on a slab with a 4” pipe for the electric/water line and no wind break. Been working perfectly down to -20 last 3-4 years.
They are short enough for sheep/goats/dogs.
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 IMG_3519 (full).jpeg (122KB - 17 downloads)
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for the northern sheep guys - - - re: waterers
