Previous owner removed heater and let propane tank rot. I'm trying to fix that. Pro's will handle the propane tank and gas connection to heater (green below), but it looks fairly simple to connect a heater, bypass circuit, and check valve, and wire in. Or am I missing something?
Raypak seems like a popular brand.. trying to find distributor. 400k should heat up my 800 gallon spa quickly, and I'm planning on at least 250 gallon propane tank.

Raypak seems like a popular brand.. trying to find distributor. 400k should heat up my 800 gallon spa quickly, and I'm planning on at least 250 gallon propane tank.
