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Thread: Be careful Midwest.

  1. Back To Top    #1

    Join Date
    Jul 2013
    Location
    Swartz Creek, MI
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    67

    Be careful Midwest.

    I checked my FC last night after everyone was done swimming. It was at 1ppm. ****! I put a half gallon of 10% in the night before. That has been about what has been needed each day for the last few weeks. I guess I've gotten used to cool weather and no swimming. There might be a lot of other people in that same rut. Just a word of caution from my experience.

    FC 1
    CC .5
    CYA 60
    I added enough chlorine to get it up to about 15 PPM. I checked it quick this morning before leaving. Just used the OTO. It was a nice dark orange so I think I should be ok. I'll have to keep a better eye on it now that we are finally getting some hot weather here in Michigan.

    Any thoughts?
    45ish year old, 16x32, 19,000, IG, Concrete/Fiberglass Hybrid in need of restoration
    Sand filter with 3/4 hp AO Smith pump. 1 skimmer, 1 main drain, 1 return

  2. Back To Top    #2
    BoDarville's Avatar
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    Jun 2012
    Location
    DFW, Texas
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    3,840

    Re: Be careful Midwest.

    I would recommend using a FAS-DPD chlorine test which is much more accurate. This is the one that uses the powder plus reagent. This test is included in the Recommended Test Kits. With the OTO, your left guessing based on the color shade. Would also suggest using the Pool Calculator to help determine the dosing amounts. Given a CYA of 60 ppm, the target FC is 7 ppm (see Chlorine CYA Chart).
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  3. Back To Top    #3

    Join Date
    Apr 2013
    Location
    Battle Creek, MI
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    298

    Re: Be careful Midwest.

    Quote Originally Posted by BoDarville
    I would recommend using a FAS-DPD chlorine test which is much more accurate. This is the one that uses the powder plus reagent. This test is included in the Recommended Test Kits. With the OTO, your left guessing based on the color shade. Would also suggest using the Pool Calculator to help determine the dosing amounts. Given a CYA of 60 ppm, the target FC is 7 ppm (see Chlorine CYA Chart).
    I think he was just trying to get a quick sense of security that he'd have enough chlorine in there for the day. If he's doing his own CYA test, he's probably also equipped to do a proper FAS-DPD later.

    I was also caught a little short on FC yesterday evening because of the nice uptick in the weather, but our water has been great all summer long, thanks to this website!
    18'x4' AG Intex Ultra Frame, 6,700 gal., assembled new 2013; Mods: Hayward EC50C90 Perflex filter & 1 h.p. PowerFlo Matrix pump, Fiber Clear cellulose D.E. substitute, Hayward H100ID1 100,000 BTU NG heater, a pair of 2'x20' Sungrabber solar heaters via the original Intex 635T pump, grey Hydro Tools through-the-wall skimmer, Confer steps/ladder system & Cover Free chemical pool cover. The Summer of Mods!

  4. Back To Top    #4

    Join Date
    Jul 2013
    Location
    Swartz Creek, MI
    Posts
    67

    Re: Be careful Midwest.

    Yes. I do have the TF 100. I just used the OTO quick this morning before work.
    45ish year old, 16x32, 19,000, IG, Concrete/Fiberglass Hybrid in need of restoration
    Sand filter with 3/4 hp AO Smith pump. 1 skimmer, 1 main drain, 1 return

  5. Back To Top    #5

    Join Date
    Jul 2013
    Location
    Swartz Creek, MI
    Posts
    67

    Re: Be careful Midwest.

    I went a little high on chlorine. I freaked out because it was so low. I usually shoot for 10 at night and that's been enough to keep me safe until the next evening.
    45ish year old, 16x32, 19,000, IG, Concrete/Fiberglass Hybrid in need of restoration
    Sand filter with 3/4 hp AO Smith pump. 1 skimmer, 1 main drain, 1 return

  6. Back To Top    #6

    Re: Be careful Midwest.

    Wildly varying usage is normal for me, I go from a covered cloudy day to a hot full sun day with hours of use quite often. 1-1.25 to 3.5 the next day isn't that uncommon, automation would probably be too much work for me.
    Aaron
    [ Vogue Vectra 24' AG | Hard plumb: Hayward Power-Flo Matrix 1HP 2-speed, 27" sand filter & Pentair MiniMax 100 NG | Taylor K-2006 | Central IL ]
    Powered by: TFP, PoolMath & TFTestkits

  7. Back To Top    #7

    Join Date
    Aug 2009
    Location
    SW Wisconsin
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    518

    Re: Be careful Midwest.

    I have a stenner that is dosing my pool at night. Just checked this morning and we are sitting at FC of 3.5ppm and 0 CC's. I used the FAS-DPD. pH currently sitting at 7.5 and CYA at 30

    Dan
    33' x 52" Swim and Play Inc. PARAGON AGP. Hayward H200 Heater. Hayward Power-Flo LX 1.5hp pump. Sta-Rite Cristal Flo T-210WF Sand Filter. Stenner 45M5 chlorine pump

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