Just thought I would amaze you guys with my high tech setups.
Similar to mine - 800', the first 400' 1" plastic from scrap yard and the next 400' 3/4". Taco 007 loop into a 600 gall SS old milk tank. The cooling freon system is busted so I have stuffed the hole with old hay (R value unknown). Another little pump (so old I don't even know who made it) and we are washing horses all day for next to nothing. Technology is us farms. Water needs to be drained once a week to stop mold growth. Now water is almost too hot. Tempering valve is sticking your finger in it and seeing if it burns.