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Thread: Would a solar cover do this?

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    Join Date
    May 2013
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    Syosset, NY
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    Would a solar cover do this?

    I have had a solar cover since moving in (2 years now) but never used it until this week. So I unfolded it and placed it on the pool on Sunday (June 16) and have left it on ever since (now June 20 - four days total). We've had some nice weather here (LI, NY) and the sun has been hitting it nicely and the temp of the pool has risen noticeably.

    That being said, I haven't tested my water since and here's where I'm at:

    6/16 6/20
    FC 4.6 8.2!!
    CC 0.0 0.2
    pH 7.4 7.1
    TA 150 140

    I'm guessing I shouldn't keep my pool covered for so many days in a row? Could the solar cover real do this?? I'm using the chlorine pucks so I guess that also explains the drop in pH?


    Thanks,
    dr
    20K gal, IG vinyl, DE filter

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    Mod Squad jblizzle's Avatar
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    Re: Would a solar cover do this?

    Yup, the pucks are continuing to lower the pH and raise the FC. With the cover, the sun does not consume as much FC. What is your CYA?

    FYI, if the wind is calm, you will get more heat into the pool with the cover OFF. The cover really does more to retain the heat that would be lost to evaporation off the surface, especially at night, than it does to add heat from the sun. The name "solar cover" is really not a good term.
    Jason, TFP Moderator
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  3. Back To Top    #3

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    Re: Would a solar cover do this?

    I guess I'll look into a roller to easily take it off and on (it really is a PITA to do it yourself). My problem is that I have a diving board on one side and steps with handrails on the other. I haven't seen rollers for the long side of the pool (mine is 16x32) but I'll take a look.

    My CYA is 80 which is up from 37 when I measured on June 1. Not sure how that increased though - I've only added chlorine (through the pucks), borax, and baking soda. Didn't think they would have an effect on CYA?


    Thanks!
    dr
    20K gal, IG vinyl, DE filter

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
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    Re: Would a solar cover do this?

    Read Pool School: pool-school/types_chlorine_pool

    The pucks are trichlor, that means they add CYA and are very acidic ... and that is the reason we do not recommend their continued use.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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  5. Back To Top    #5

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    Syosset, NY
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    Re: Would a solar cover do this?

    Quote Originally Posted by jblizzle
    I did - there's a lot to remember!! I know they are acidic but didn't know they contributed to CYA.

    The good news is that I have the SWG in hand and it will be installed soon!


    Thanks for your help!
    dr
    20K gal, IG vinyl, DE filter

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