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Thread: Sand Filter beginning to Die?

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    Sand Filter beginning to Die?

    I am mid shock process & now that my steps are sparkling clean, I noticed a very small amount of sand on 2 steps. When I say small amount, I mean less than a palm full scattered. No other sand noticed out of any of the other returns, nor any noticed in the Polaris filter. The filter seems to be working ok. Cloudy water noted in view glass when beginning backwashing & rinsing, then gets clear, like it should. I replaced the pressure gage yesterday & no significant increased pressure noted. Could this be the beginning of the laterals going bad, or some other problem?
    Starla
    1993 22x42(40K gal) vinyl Grecian, inground
    Aquarite SWG, Hayward s244t sand filter & 1hp Hayward pump, polaris 380 w/booster pump and dedicated return.
    2 skimmer baskets, main drain, 3 returns along wall, 2 at steps

    Taylor K-2006

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    Re: Sand Filter beginning to Die?

    I usually vacuum my pool every 2 to 3 days. It is used very lightly. There is ALWAYS something that looks like sand in the bottom of my pool just scattered here and there. I always figured it was dirt blown in and settled although Im not really sure its not sand. Ive never seen it on my steps though. I do notice when I backwash on high there is sand at the end of the 40 foot pipe. It has been like this as far as I can remember (2 or 3 years?) and I dont have any problems. Pool is crystal clear. If it worries you then if you can make it to next year, check your laterals when you close the pool.
    18,000 Gallon Aboveground. Sand Filter with 2HP 2 speed Pump.

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    Mod Squad zea3's Avatar
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    Re: Sand Filter beginning to Die?

    You are probably seeing dead algae collecting in areas with depressions in the surface or poor circulation. Dead algae tends to pile up in drifts until it is vacued out of the pool. Dead algae is sometimes confused with sand in the pool.
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    UnderWaterVanya's Avatar
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    Re: Sand Filter beginning to Die?

    To test if it is sand you can put a sock on a return for a few days and then check it for debris inside when you remove it. My filter leaks a little it is on my to do list to fix. I noticed it on steps and then confirmed it with the Polaris inline screen.


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    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

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    Re: Sand Filter beginning to Die?

    My steps have returns & the water "swirls" in that area. I was able to collect a couple of granules /grains & it is definitely sand. Since the filter seems to be working should I just not worry about it for now?
    Starla
    1993 22x42(40K gal) vinyl Grecian, inground
    Aquarite SWG, Hayward s244t sand filter & 1hp Hayward pump, polaris 380 w/booster pump and dedicated return.
    2 skimmer baskets, main drain, 3 returns along wall, 2 at steps

    Taylor K-2006

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    Re: Sand Filter beginning to Die?

    Since the filter seems to be working should I just not worry about it for now?
    Yes. A bit of sand from time to time probably isn't worth chasing.

    If you decide to anyway, the first thing to do is open the filter and inspect and clean the sand bed. It should be about 2/3 full.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Sand Filter beginning to Die?

    Thanks Dave, will do!
    Starla
    1993 22x42(40K gal) vinyl Grecian, inground
    Aquarite SWG, Hayward s244t sand filter & 1hp Hayward pump, polaris 380 w/booster pump and dedicated return.
    2 skimmer baskets, main drain, 3 returns along wall, 2 at steps

    Taylor K-2006

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    Adding Alum to sand filter?

    Keep your posts under one thread.....it helps everyone

    I thought I read a post that stated a small amount of alum could be added to a sand filter to improve filtration, but I can't find it. Anyone ever done this? I know DE or Sparkle up can be added with no problem, but I thought alum might clog the filter.
    Starla
    1993 22x42(40K gal) vinyl Grecian, inground
    Aquarite SWG, Hayward s244t sand filter & 1hp Hayward pump, polaris 380 w/booster pump and dedicated return.
    2 skimmer baskets, main drain, 3 returns along wall, 2 at steps

    Taylor K-2006

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    Re: Adding Alum to sand filter?

    Quote Originally Posted by AlphaMare101
    I thought I read a post that stated a small amount of alum could be added to a sand filter to improve filtration, but I can't find it. Anyone ever done this? I know DE or Sparkle up can be added with no problem, but I thought alum might clog the filter.
    I dont know anything about using anything other than sand and my water is clear enough to suit me. If I take a clear drinking glass and fill it full of pool water I can see very tiny particles in it so I assume the sand is not filtering particles that small, but like I say the pool is still very clear. I can take a very bright flashlight and shine it in the pool at night and it looks like the water isnt even there. I suppose if I was going to use something it would be DE. Consider getting some knee high pantyhose and stretch it over the skimmer basket. You wouldnt believe the bugs, crud, pine needles and everything else it will catch before it hits the filter.
    18,000 Gallon Aboveground. Sand Filter with 2HP 2 speed Pump.

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    Re: Sand Filter beginning to Die?

    I do the knee high pantyhose in the skimmer as well. It's great when I use the manual vacuum at helping collect all the tiny bits of debris so my filter doesn't have to... keeps the amount of back washing down for me.

    I added a bit of DE this year at the final clearing when we opened to algae this year ... first time for everything. It did make a quicker clear up, but I haven't used it since the last back wash. It tends to make me back wash sooner, and I haven't noticed that much difference in water quality.
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist buy w/part of deck included), 13,500 gallons, Intex SWG, solar panels mix 2, TF-100 test kit.

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