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Thread: "Retractable Pool Cover IS your Stabilzer"

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    MBMMPool's Avatar
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    "Retractable Pool Cover IS your Stabilzer"

    (Quote from my Pool Installer/Services provider).

    Wondering what people's thoughts are with regards to this statement. This will be my first full season with my new pool. I plan on following the BBB method (as I did for ~2 months of operation last year). However, I can't say that I will NEVER resort to Chlorine Tabs in the Auto-feeder on "busy weeks" when I am away from the home on business, etc.

    Pool has full sun exposure, but an Auto-Cover will be closed every night and day hours when pool is not being used by the kids. I am starting with a pool that was drained/filled with "fresh" water in the fall, so no stabilizer is currently present. I'm planning on starting the season by taking CYA up to ~40, but my Pool Installer's comment has given me a reason to second-guess my plan.

    Thanks for any input, and happy swimming,
    18x36' 25,000 Gallon IG Vinyl Pool
    Coverstar 3000 Pool Cover
    Sand Filter (S244T)
    AO Smith 2Green 1HP Two Speed Motor W/Timer
    Pentair IntelliBrite 5G LED Lights

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    duraleigh's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    Removing sunlight from your pool eliminates chlorine loss to UV. I would suggest a CYA level of 30-40 ppm because on the days when you do swim (expose to sunlight), the FC will deplete VERY rapidly without it. On the days when your pool is covered, the CYA causes absolutely no harm....put it in there!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    harleysilo's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    I find my pool cover really saves on chlorine levels. I also find that it is hard to get chlorine levels to drop (assuming no organics in water, and no use during the day). So if i overshoot on chlorine it can take several days to come back down. My overshoot would just be me trying to dial in my SWG chlorine's production, your over shoot maybe be pouring in a little too much bleach, but really that shouldn't happen with the handy dandy pool calculator in pool school.

    We keep our pool closed unless someone is swimming, i mean if we go inside for a 20 min break or so i close it, but i have 2 small kids. Once they both are good swimmers ours might be left open more. I would still keep it closed all week during the day to keep debris out, and keep the water warm. We do swim a lot on the weekends, hours, and then the wife and i hit it up again at night. and if chlorine levels drop during the weekend i supplement with bleach.

    You are going to love your auto cover. Have they told you about "annual maintenance"? Basically mine go supper dirty over the winter, requiring me to scrub it with a brush and citrus cleaner. After it was rinsed and drained i hit it with Aerospace protectant 303. The pulleys and stuff under the lid i lubed with food grade spray silicon per my installers suggestion, along with the track in the pool.
    Cleaning out the pit wasn't too bad with a shop-vac, not realizing how much stuff accumulated in there over the almost year, i'll be doing that 2 times per year now.
    18'x43' Sport Pool
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    Isaac-1's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    If your considering going with no CYA, then you should read the comments on here about why CYA should be used in an indoor pool (at a minimal level of 20-30), it has to do with buffering and reduction of active chlorine rates.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    frustratedpoolmom's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    I agree - a min of 20-30. I would suggest 30 since there will be times the cover is open and water exposed to sunlight.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
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    Re: "Retractable Pool Cover IS your Stabilzer"

    I have a mostly opaque automatic electric safety cover but the pool cover is open and the pool used for about 1 hour every day. I used to have around 30 ppm CYA but now have 40 ppm CYA and find it a little better at protecting chlorine breakdown from sunlight during that hour the pool is open (longer on weekends). I'd start with at least 30 ppm CYA and see how things go. I think 20 ppm is going to be too low -- it's OK for an indoor pools, but not outdoors even with an opaque pool cover.
    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
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    MBMMPool's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    Thanks for replies, everyone. I will go ahead and start the season with CYA at 30.
    18x36' 25,000 Gallon IG Vinyl Pool
    Coverstar 3000 Pool Cover
    Sand Filter (S244T)
    AO Smith 2Green 1HP Two Speed Motor W/Timer
    Pentair IntelliBrite 5G LED Lights

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    harleysilo's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    Quote Originally Posted by MBMMPool
    Thanks for replies, everyone. I will go ahead and start the season with CYA at 30.
    Well it's been a month, how's it working out for you?
    18'x43' Sport Pool
    19,000 Gallons Vinyl Liner 3'-3.5'-4'
    SWCG and D.E. Filter
    Test Kits - Pool Calculator - Chlorine/CYA Chart - Pool School

    Secret Weapon for Pool Chemistry Testing

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    MBMMPool's Avatar
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    Re: "Retractable Pool Cover IS your Stabilzer"

    Quote Originally Posted by harleysilo
    Quote Originally Posted by MBMMPool
    Thanks for replies, everyone. I will go ahead and start the season with CYA at 30.
    Well it's been a month, how's it working out for you?
    Unfortunately, this summer's cool start in the Midwest has preventing me from getting a real feel for my Summer "typical use" Chlorine consumption up to this point.

    With 35 CYA (based on measurement), PH around 7.7, my (covered) clear water is consuming less than 1 ppm of Chlorine per day.

    Now- where is the sun and 80 degree temperatures?!





    18x36' 25,000 Gallon IG Vinyl Pool
    Coverstar 3000 Pool Cover
    Sand Filter (S244T)
    AO Smith 2Green 1HP Two Speed Motor W/Timer
    Pentair IntelliBrite 5G LED Lights

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