Originally Posted by Koolio
This first tank is made of galvanized steel and has straight sides, so hubby was able to make a box with a pretty snug fit. The second plastic tank is tapered toward the bottom and has a thick lip on the top, so the fit in a rectangular box won't be near as snug. I am thinking of we may need a different design for the second tank. Any suggestions?
Could you still make a rectangular box, frame the top and fill with loose house insulation?
I also know of a family who gave their kids the chore of gathering cattails all summer and they used the fluff to insulate a tank box that fall. It was labor intensive and the kids caught as many frogs and snakes as they did cattails, but it's surprisingly good insulation.
And while we don't get as cold as Alberta, we have some good luck burying tanks like yours about 3/4 in the ground. Horses drink at ground level naturally.