I have a small tub, (I made many years ago to be heated offgrid with a Chofu heater. Now I have propane and would like to heat it with propane. I am still off grid, but I do have a decent amount of power, but prefer only to run the tub and pump when it will be used. I've tried calling places that sell heaters and pumps, but of course they always either know nothing, or they just tell me to talk to "my installer" (50 miles from the nearest city that HAS installers). I would like a heater that would heat the tub up from say 60 to the 105 in 2 hours or less. I assumed I could get a heater with something like 150K BTU, (like the Hayward) but calling a supply place like Doheny's, the person that responded I think was probably in some foreign country and definitely didn't know anything that wasn't in his data bank. He said it was too big. Ok, Raypak makes a 105K BTU, at 500 gallons, it sounds like that would take close to 2 hours. Ok. Sounds like there is more satisfaction with the Hayward, but I'm amenable. I can't just buy a heater, I'll need a circulation pump. NONE of the mfg's would tell me what size pump of course. I assume it only needs to cycle something like 50 GPM or less? 1/4hp or less? I have adequate Propane for either (1" line). I haven't put in the pipes yet, but assumed 1 1/2" pipes would be adequate, (the heater is about 10' BELOW the tub and maybe 8 feet from it's base, so there will be some thermosyphon action too.
I do have a filter on it, though in truth, I run spring water into the tub and have pretty much endless supply of such water, (at least for this tub) so I might well not add chemicals to the water. In the distant past, I had it attched to solar water panels and kept the water in it about 125F so there was NO growth of bacteria. (had to add cold water when I wanted to use it of course) But that works well in the summer, but in the winter when folks want a soak, it doesn't. Any advice is much appreciated.
I put in a 13K gallon above ground pool about 5 years or so ago, with advice from this forum, and am totally delighted. Following your advice, I NEVER have had any algae, I swtiched to SWG about 3 years ago and it is even better.
I do have a filter on it, though in truth, I run spring water into the tub and have pretty much endless supply of such water, (at least for this tub) so I might well not add chemicals to the water. In the distant past, I had it attched to solar water panels and kept the water in it about 125F so there was NO growth of bacteria. (had to add cold water when I wanted to use it of course) But that works well in the summer, but in the winter when folks want a soak, it doesn't. Any advice is much appreciated.
I put in a 13K gallon above ground pool about 5 years or so ago, with advice from this forum, and am totally delighted. Following your advice, I NEVER have had any algae, I swtiched to SWG about 3 years ago and it is even better.
