I have an unheated pool and want to eventually do solar but I'm not seeing that in the budget for this season. I have been watching Craigslist for used equipment options and found an antique Sears wood / coal boiler that the previous owner has used to heat his pool. I bought it for $60 on a whim.
He claims it works fine but that it puts out rusty water for a couple minutes if it sets for a couple days without use. He would just waste the rusty water and then when it runs clear, he would send it to the pool. He says he never had a rusty water problem and never used any sequestering agents.
Anyone else do this before? Am I asking for trouble here if I plumb this into my system?