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Thread: Pool looks green, sand filter leaking sand into pool

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    Pool looks green, sand filter leaking sand into pool

    My pool has been looking 'green' lately. It seems to be getting worse.

    We had a bunch of rain a week ago and I drained a lot of water.. I didn't end up getting my CYA and Salt level back up to where they should be since the pool looked funny and I wasn't sure if i'd need to SLAM it. Also, my sand filter has been leaking sand into the pool since sometime during my first season with the pool (this is my 3rd season, I should've fixed it sooner). It usually just required me vacuuming a little sand back into the filter once a week, but it seems to be worse this season. I uploaded a video to youtube of me scrubbing the pool (link below)

    So any ideas what's going on? is it just so dirty with sand that it's appearing greenish? I've done a little research into fixing my filter before, seems like most of the time, the little fingers at the bottom break? Any tips on getting to them, i've heard you need to scoop the sand out or use a shop vac. My house sat vacant for a couple seasons, so I suspect something broke when it was turned on after sitting for so long.

    but here are my results:

    FC - 6.5
    CC - .5
    pH - 7.7
    TA - 60
    CH - 50
    CYA - 40
    Salt - 2700




    (sample I took for testing)

    Not sure if there's a way to embed youtube videos, heres the link. I vacuumed a little last night, but it's still pretty sandy today:
    Scrubbing sandy pool - YouTube
    26' Octagon, IG Pool, ~16gal, 5-5 1/2' deep, Liner, Sand Filter, Aqua-Rite Salt system, 3/4hp Pump, Pool Blaster Max Vacuum, TF-100 Test Kit.
    (I'm still learning) :)

  2. Back To Top    #2
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Tallahassee, FL

    Re: Pool looks green, sand filter leaking sand into pool

    I am so glad you have a good test kit! You are far ahead of the rest!

    Filter-you really need to take the sand out and look at your laterals and pipe. We had one person that had a tiny little chip out of the top of the pipe that was letting sand back into the pool. You can use a shop vac to suck the sand out. I put mine in my wheelbarrow so I did not have to bend down so much and I could just dump the sand into the wheelbarrow when the vac got full. It also gives your room to wash it out good.

    Your pool color says time to SLAM to me That is algae colored for sure.

    I am not sure which you want to do first. Let me know and we can go from there.


    - - - Updated - - -

    The video worked. Good job! Yeah you have algae.
    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, Become a TFP supporter!

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    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Columbia, SC

    Re: Pool looks green, sand filter leaking sand into pool

    I would say don't add CYA right now. I agree with Kim, time to SLAM the pool.
    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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