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Thread: Wierd, not losing chlorine!!!

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    Wierd, not losing chlorine!!!

    I hope Chem Geek happens by, but this is also for anyone

    Converted to SWG a couple weeks ago. My CYA is high. It was 140 and I got it down to 130 before converting. It should keep falling.

    In any event, Chem Geek's math showed I'd need about 20% run time on my T-15. I'm not even CLOSE to that and not losing anything. I'm running it at 50% for only 5 hours a day. I'm getting FC of 14 in the afternoon after the pumps have stopped, and 13 in the morning before they start. Even with that CYA, AND having an enclosure, shouldn't I be losing more? It's not an OCLT, as it includes all loss from 1 PM to 8 AM the following morning and losing 1 PPM at the most.

    On a side note, I keep reading 13-14, pool guy always reads 7-7.5 when he's here. NO idea what kind of test kit he's using, but I'm disturbed at the drastic difference. Well, other than even his shows it as being stable.

    Just curious if my enclosure could be making that big of a difference, combined with the high CYA.
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

  2. Back To Top    #2

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    Re: Wierd, not losing chlorine!!!

    You are adding about 1.2ppm of chlorine a day and it seems to be stable. I would think that it is very possible to see what you do with a high CYA level and a screened in pool.

    What are you doing to reduce the CYA?

    Trust your test kit readings as you have the best test, the FAS/DPD. Find out what test kit your pool guy is using, unless he also has a FAS/DPD test, he will not be nearly as accurate as you are.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
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    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    Re: Wierd, not losing chlorine!!!

    Pool guy will be fired soon anyway, and he doesn't like to pull his earphones out to talk, so I'm just happy he also shows stability even if reading a far different level.

    His manager has also actually joined TFP after I gave him the info and helped me a lot with the final equipment cut-over. LOL, but his employee just yesterday told me borates were the same thing as sodium bicarbonate. This is after last week where he said everyone here was wrong and using the dilution method for CYA wasn't accurate. Other than his weekly "CYA is 80-90" suddenly became at least saying it was 100. Still not accurate. To top it off he just cost me a chunk in electricity turning on my pump manually and it ran the entire six hour super high billing period.

    As for the CYA, if I ever need to SLAM I'll drain first. We only recently bought the house and they used pucks for many years. With 65 inches of rain a year I'm going to just let it fall now that there are finally no pucks. Barring any emergency need of course.

    On the tests, while I am not relying on them, I also have two different brands of test strips that appear in boxes of equipment I have purchased, both of those max out at 10 ppm and both show it maxed, so I trust my 13-14 Just confused about how little loss I get. I expected to need my SWG at 100% for 5-6 hours and 50% at 5 hours seems to have it covered, at least until that CYA slowly falls.
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

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    Re: Wierd, not losing chlorine!!!

    Oh, I just re-read my own post and the part about CYA coming down that you were likely asking about.

    "What are you doing to reduce the CYA? "

    I initially only ran the hose in, then drained it off. Not efficient, but we had company so there was no draining. After Chem Geek clarified I decided to just "let if fall" from here on out unless I need to SLAM for some reason. I filled the pool about 6 inches above normal, twice, and drained it off. Only dropped it from 140 to 130.
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

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    Mod Squad kimkats's Avatar
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    Re: Wierd, not losing chlorine!!!

    Seems as if your SWG is doing a wonderful job. Don't complain just enjoy!


    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: Wierd, not losing chlorine!!!

    Not complaining It just seemed way to small of a daily loss. I am enjoying it otherwise!!!! No more pucks in my strainer baskets!
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

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    Mod Squad tim5055's Avatar
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    Re: Wierd, not losing chlorine!!!

    It will come down if you work on it. You have to figure ways to get water in the pool that needs to be pumped out. Like you, I bought a house from a puck/shock user. The pool stores around here must have trained your pool guy because all of them said CYA 80, you are fine. When I got my test kit, best I can figure it well north of 200.

    I was aggressive with backwashing, did a few partial drain/fills and the most important thing I think I did was harvest rainwater from a roof gutter into the pool. Every time we had a good rain I was pumping out an inch or two.

    18 months later I actually had to float some pucks to bring the CYA up some
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Wierd, not losing chlorine!!!

    64 inches of annual rainfall, and no more pucks!!! It should fall It was before the pucks were removed, but have already had storms that added a good three inches in a short time I had to drain off.

    Fingers crossed I don't need a SLAM until it's lower, but I'm not going to stress on the CYA the former owners accumulated much. Losing only 1 ppm chlorine a day though seemed really odd. Well, roughly 1 ppm anyway.
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

  9. Back To Top    #9

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    Re: Wierd, not losing chlorine!!!

    I presume you are talking about my estimates for chlorine loss in this chart. First off, that assumes full sun, not an enclosure that significantly reduces the amount of sunlight -- probably by half or more. Remember that the human eye is not linear in viewing lightness/brightness and that something that is half as bright visually only has 20% of the actual intensity. So you could easily have your screen cut in half the intensity of sunlight and your eye would only think it's 76% as bright, not 50%.

    So your 50% for 5 hours per day is equivalent to 31% for 8 hours and I said that the 20% ontime would be for the daylight hours so I don't think I was that far off. I didn't say the 20% ontime was for 24 hours since the table assumed 8 hours of noontime-equivalent sunlight. If anything, you are running higher than I predicted, not lower, especially given your screen enclosure.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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  10. Back To Top    #10

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    Re: Wierd, not losing chlorine!!!

    Bah, I thought 20% was total and not within an 8 hour window. I saw the 8 hours mentioned when calculating loss but thought it was just for that. I was just worried something was really off Being a little "higher" that you would have expected wouldn't have surprised me since we had kids and a grandkid in it for a week and they just left

    Thanks again!
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

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