wild bill;4462293; said:You mentioned looking for cheap way to heat tanks I have heard of people using a hot water heater was wondering if a person could find a cheap working used one and work it like a kind of sump to all the tanks the downfall would be if some thing goes wrong in one tank it would effect the whole works just an idea.
yes that could happen, but thats why if I do central system, I would install valves to isolate the tanks if need be.