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    Rapid pH increase with SWCG

    Ok. Finally closing this headache of a pool. I pulled the salt cell and there is no visible scale or buildup. I would have thought this think would’ve been caked with the issues I’ve been having with CH. Anyway, the cells are nearly brand new looking. Do I hold on the acid soak? Seems...
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    Rapid pH increase with SWCG

    So evaporation/adding well water is not typically an issue for me. We are pretty humid most of the summer and/or we get enough rain to keep within 1" of mean water line target. I've only added water from the well 2 times this season and each time, I estimate < 500 gals. The last time water was...
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    Rapid pH increase with SWCG

    At this point, yes, I believe we've ruled everything else out. No CaCl has been added since July 29. On the 30th I measured CH at 450. I didn't measure much from that point because typically I only measure CH monthly. Rapid pH rise has plagued this season so before I left for vacation on Sept 11...
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    Rapid pH increase with SWCG

    It is quite widespread. On all the steps and horizontal surfaces. There is also a substantial surface change at/around the returns. I assume this is from chemical dosing, although I'm pretty careful with dosing, especially MA and CaCl. I had mentioned in one post my ignorant mistake of using...
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    Rapid pH increase with SWCG

    More power to you @Bperry. Four years ago I thought the same thing, looked it up online but realized I don't have the time, patience, and most importantly the expertise. Also thought about getting it fiberglassed.
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    Rapid pH increase with SWCG

    Unfortunately, I have to have water brought in. Our well water is contaminated with road deicer (Sodium Chloride) and quite acidic (4<>5). Fortunately, I've had to drain this bugger many times in the 8 years I've been here so I've gotten down and can time it to almost the moment the truck...
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    Rapid pH increase with SWCG

    I did plan on draining up opening next year, due to hardness levels. I knew that the only way to get rid of salt (or hardness) is to drain/fill. I had read "somewhere" that "salt" pools tend to realize shortened plaster life (abrasive). Not stating it caused my problem, obviously signs of...
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    Rapid pH increase with SWCG

    Yeah @Bperry, If it aint broke don't fix it. One thing is for sure. Whenever I do replaster this thing again, I will be taking copious notes and documentation of every step so that if it does fail prematurely, I have a leg to stand on with a workmanship or materials claim. @JamesW (or anyone...
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    Rapid pH increase with SWCG

    But in all seriousness, this issue did seem to come up this season with the addition of SWCG. I'm not saying it is the cause of the plaster dissolving, but adding salt to an already weak plaster probably didn't help. Of course I didn't know this until adding the SWCG. Adding borates was also a...
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    Rapid pH increase with SWCG

    LOL. well that should save some money on another replaster job
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    Rapid pH increase with SWCG

    You betcha! Unbelievable how bad my plaster is failing. My water feels like sticky slime and I can't keep the water balanced to save my life. It was 3 years since replaster in August. There is no way (I guess there is some way) this should be failing so bad at this point. I'm about to close...
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    Rapid pH increase with SWCG

    Lol. Definitely #3
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    Rapid pH increase with SWCG

    One would think if calcium (plaster breakdown) is the culprit, my salt cell ought to be caked with scale. I’ll find out soon enough. Obviously not too caked as it’s still producing chlorine
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    Rapid pH increase with SWCG

    I hate to close it in this condition. But I won’t have time to drain, acid wash, then fill before closing time. Something to look forward to next spring I guess 🙄. Certainly seems like I should get new fill and start over. I definitely think having to dump a gallon of acid in this thing every...
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    Rapid pH increase with SWCG

    So I’ll test salt tomorrow but I’m pretty sure it’s at 3600-3800, hasn’t rained much since my last test. I’m familiar with the non salt feel you speak of. This is not it. It’s like actually sticky. My fingers stick to the test tubes until I rinse them with my tap water. It’s the craziest thing.
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    Rapid pH increase with SWCG

    Any thoughts on my sticky water? I assume it’s related, either by cause or effect. CH continues to rise. pH jumped almost 1 point in just 3 days. This is insane! If this is the plaster dissolving then I’m screwed because we had it replastered 3 years ago and I’m sure there’s no warranty...
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    Rapid pH increase with SWCG

    And to pile on. Now my water feels sticky! I almost didn’t post this because it sounded so stupid. But it literally made my arm and test tubes have a feeling of a wax cucumber. That is the only way to describe it. Like my fingers won’t slide across a surface wet with pool water, there is...
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    Rapid pH increase with SWCG

    I did add borax. At or about 40 ppm now of borates. But I only added acid in that time frame to counter the borax dosage. This was at the end of Aug. Now I did add CaCl a month prior on July 29th. To clarify I added the borax in an attempt to improve my pH stability, but of course it didn’t...
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    Rapid pH increase with SWCG

    There is visible scale in certain locations near the water line for sure. There’s a love seat section that doesn’t get great water flow, which is where most of the scale forms. I wouldnt think it would be enough to impact chemistry, but I can’t rule out anything.
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    Rapid pH increase with SWCG

    I just wonder how much of it is plaster vs scale since my pH has been high most of the season. While yes there is some pitting, its not like there is plaster just falling off. At least not visible signs.
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    Rapid pH increase with SWCG

    Ok. New tests in. So it seems there may definitely be a correlation between my plaster and these whacky numbers. Understanding that I’m still within the margin of measurement error… I did a full brush last night with my new nylon brush. And today my CH returned 20ppm higher. No chemicals...
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    Rapid pH increase with SWCG

    [EDIT: Diatomaceous Earth Filter Powder 25 lbs - DE For Pool Filters - In The Swim | In The Swim] I'll have to run out to the shed to see. It's a Pentair Quad DE 100 sqft. Takes 10lbs of DE put in at the beginning of the season. I'll have to look at the brand. Whatever InTheSwim.com was...
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    Rapid pH increase with SWCG

    I didn’t post a picture of todays test, but the endpoint is now purple. You‘re right though, I have no idea what it is, but it’s substantially above 8. The amount above 8 is only important for determining the acid dose. My issue is rapid rise in pH, TA and apparently CH. Its unexplainable and...
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    Rapid pH increase with SWCG

    @JamesW you’ve helped me as best as you can. I appreciate all of it. Even if we don’t have an answer
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    Rapid pH increase with SWCG

    TA and CH are both on rise again. I didn’t even test yesterday and still haven’t dosed acid since my interpreted my 8.6 the other day. Chances are it’s now 8.8 or above. I hate to say it, but I’ve lost motivation. Im out of ideas. None of this makes sense to me, and seems no one else. Im...
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    Rapid pH increase with SWCG

    Test kit was purchased the beginning of the season and has expirations into 2023. I also confirmed the same test results with an older kit that expired in April of this year.
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    Rapid pH increase with SWCG

    Day 10: pH still appears to be rising. No change in TA or CH. Not sure what the measurement is but it took 4 drops of acid demand reagent to reach 7.8, and the end point is approaching purple. Do I hold or do I dose acid? I’m out of ideas now.
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