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    Auto fill plumbing

    Thanks for the thought. Yeah, I know they are made in a huge amount of specifications. I didn't use the spring plunger variety, assuming that the pressure would never be enough. I think I did neck it down to 1/2" but might be 3/4". I used a stainless metal "swinging gate" valve. Some of...
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    Auto fill plumbing

    I put on an auto fill on my AG pool last year. I built it into the deck, and plumbed it out. But now I realize it doesn't actually work as I had hoped. The problem is that being plumbed into the return injector line, I needed obviously to put in a check valve so that the pump wouldn't just...
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    Stenner liquid chlorine pump - How to choose and install

    Yes, I'm interested also. I've only been running my Stenner pump for a year, and no problems whatsoever. I also have a completely shaded system, and less heat. I also don't use anything stronger than the 6% bleach. Can you tell us more about if the cracks are in the PVC or in the black...
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    Using old rooftop solar water panels to heat pool.

    True, copper has some value. But the bladder on a panel is pretty thin. I sort of doubt that there is more than 20 lbs per panel, maybe 1/2 that. Not to say worthless, but not a huge amount. I used to use these 4 panels to keep a hot tub hot. Worked very well, kept the water at about 125 in...
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    Using old rooftop solar water panels to heat pool.

    Yes, one can do that for sure. My neighbor on a ranch next to mine does that, but that is a considerably more expensive system. I think I should just go get some of the poly panels. Anyone have a good idea of which ones work best?
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    Using old rooftop solar water panels to heat pool.

    Ah, so you are saying that the copper and Chlorine might indeed make for problems. I'll read that.
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    Using old rooftop solar water panels to heat pool.

    Thanks for the reply. yes, the pipes too and from the panels would be PVC, but agreed, the gauge of the copper itself in the panel is fairly thin. But if destruction of the panels themselves is the only downside, then I think I might use them. They are not worth much to me otherwise. I was...
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    Using old rooftop solar water panels to heat pool.

    have a 13,500 gallon AG pool I installed last year. All has gone really well, with the advice from a member here. I’d now like to raise the temperature of the pool a few degrees. Last year, in the middle of the summer, from July thru August, the pool stayed in the mid to high 70’s on average...
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    Stenner liquid chlorine pump - How to choose and install

    Thanks Steve. Think I understand this pretty well. .... Well, who am I kidding. probably I understand it well enough so that I will be able to figure it out as it happens! pk
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    Which pump do I choose of these two?

    Thanks for taking the time to give me a long answer. Interesting, I am on another woodworking forum and there are lots of electrical engineers on that forum and while I may well be misunderstanding, I did not know that single phase motors were able to be variable speed with such a drive...
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    Which pump do I choose of these two?

    I'm not an electrician, but my understanding is, basically all 3 phase motors are variable speed, thru, as you say, varying frequency. Basically single phase AC motors are NOT variable speed. So, not saying that this is what is going on, but if it is a variable speed motor, in general, it is...
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    Which pump do I choose of these two?

    Thanks Bizzle I do understand I need to wire the SWCG in such that it is not going without the pump. That can be done, but yep, will need a bit of figuring out. If I couldn't, I guess I'd have to run a different way. As to why I like DC pumps? DC motors are great motors. They used to be...
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    Which pump do I choose of these two?

    Thanks VERY much Bizzle and Chuck. All very good points. Yes, I do have inverters of course, and yes, I have 220 and 110, all 60 hz. I suppose you are right about a PV sensor that might indeed save my system if it is cloudy for too long. Just being off the grid makes one VERY careful about...
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    Which pump do I choose of these two?

    Hopefully the above file can be read Chuck.
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    Which pump do I choose of these two?

    Chuck, couldn't seem to get the PDF to save here, so hopefully taking a picture of it, and I can figure out how to post a picture.
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    Which pump do I choose of these two?

    Hi Chuck, thanks. I very much appreciate your response. As Marty mentioned earlier, I DID have a thread about Solar pumps. I didn't get a lot of replies, as I find, most folks of course don't bother going solar on their pumps, as there really aren't a lot of options that are easily found...
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    Which pump do I choose of these two?

    Thanks Marty and Mayorb Yes Marty, I had an earlier thread months back asking about Direct solar pumping. I suppose I could have added this to that, but this question isn't about whether or not to use direct pumps. That was decided. This was whether a 2/3 hp was adequate or did I need to go...
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    Which pump do I choose of these two?

    I’m looking to install an AG pool this spring, ~15,000 gallons. I’ve dozed the site and am ordering a pool soon. I’m looking at a DC VS pump that is 500 watts (2/3hp), or one that is 900 watts, (about 1.20 hp.) (I’m off the grid by the way!) The 500 watt pump, supposedly pumps maximum 4400...
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    Anyone ever heard of these MFG?

    in a different industry, (sewing industry) I used to manufacture stuff in the US. We went offshore in the 80's. I've worked in MANY factories in China, Nam, Laos, etc. They CAN and do make quality products. It really depends on what the buyer wants often times. If they want cheap, they can...
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    Solar and SWCG Design Question

    thanks again Jim for taking the time to answer. Ok, I understand a bit then about the cell. I will talk to some of the manufacturers of cells. There IS a company that markets a DC direct swg, but then it "floats" in the pool under the panel, so there is not much chance of gas buildup...
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    Solar and SWCG Design Question

    Hi Jim Thanks for the response. Yes, both are going to be DC rather than either AC. I don't want to run the pump 24/7 and intended to only run it while there was sun. I could further reduce it's run time by putting it on a timer I suppose. (an AC timer). I'm curious though and as I'm not...
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    Solar and SWCG Design Question

    I'm just in the process of designing my system and am curious. I going with an AG 15,000 gal pool, and I'm going solar direct for the pump. I'm also going to go solar direct for the swg. I assumed that I wouldn't want the swg running without the pump running, and that isn't as easy solar...
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    Does anyone make a direct current Salt cell device?

    Thanks for all the quick replies! Marty, What, you don't think Berkeley is sort of "remote"? Yes, I have a ranch (not in Berkeley) that is a few miles inland from Ft Ross. That's were I am putting this pool. While I have a fair amount of power with inverters, (70amps, 14,000 watts), it is...
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    Does anyone make a direct current Salt cell device?

    I am planning on building an AG pool this year. Looking at something like 15,000 gallons. This is in a remote area, where we don't have grid power. I do have AC, but I have to run thru inverters to make it. I'm going to power the pump with panels and pump directly, as that makes it easy NOT...
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    Air in roof solar heater

    Hi John. If I'm understanding you correctly, you think air has gotten into the lines in your solar water heating. Not unusual, and often a water circulation system for heating is fairly low pressure so it might well not "flush" the lines just by turning it on. If there is air in the line, it...
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    Cheap Chinese Variable Speed Pump 1.5HP

    I worked for 25 years making stuff in China. Made for another 15 here in USA first. Our stuff was pretty darn good out of China. Just can't go and say, "make this" and make it at this price. You will often get junk. You have to really work with them, have a person there in the factory if...
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    Direct solar pumping

    Well, yep, not great wind, but also windmills are GREAT for bringing water from even deep in a well, being a piston pump. you can pump water from 1000 feet deep if you needed too. But they can't pump very well without constant maintenance if you are pumping above the top of the windmill. And...
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    Direct solar pumping

    Thanks guys. I'm still looking at Sun Pumps. Somewhat curious about Sun Ray also. (Claims made in USA, and is obviously really geared toward pool). A bit cheaper at $900 for pump and controller/motor, (brushless). I'll have to do a lot of reading and talking to these guys. I think Lorentz...
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    looking for advice on what brand of AGP to buy.

    Thanks Richierich, and Steve in C. Pool Factory sounds good. That is what I want to hear. I'd like someone that will be responsive. Steve, i've emailed MGK a couple of times, filled out their contact us form, etc. NOTHING! Seems the owner probably knows what he is talking about, though he...
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    looking for advice on what brand of AGP to buy.

    Hi, new member here. I'm looking to install an AGP this winter in No Cal. Remote location, won't have much kid use, probably mostly May to Sept, 2 to 3 times a week. I really don't want to have problems (no one does I know), as I have a lot of other things to do. I'm willing to buy a higher...