Today's project is to build a poor person's solar hot water heater (calendator) so I don't have to use electricity. Install Pex water line up to the roof, then 50' of 1/2" black irrigation tubing as a collector, in to the relocated tank for storage, and back down to the hot water line. $300 DIY vs. $1500 for commercial = Profit!
It takes all day to drill out another 2" hole and run the PEX in 90 heat. Burnt up the hammer clutch on a a brand new Ryobi hammer drill too. But I've got the PEX run, the 12 gal. tank de-installed, wire brushed & painted, and hauled up to the roof where it will go in to service as a storage tank only.