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    Watermom's Avatar
    Watermom is offline SuperMod Emeritus Quark Inspector Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars
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    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: Sand filter failure

    Quote Originally Posted by Watermom View Post
    The consensus around here is a big NO. Don't use the liquid cover on your pool.
    Exactly. Get a lighter cover (12 mil) and a cover reel. You'll be much happier.
    Carl

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    Default Re: Sand filter failure

    I believe you on the NO for the liquid cover. I can imagine it fouling the sand. Thank you both Watermom and Carl.
    Another question: What about the idea of putting a limited amount of DE media on top of the sand in my sand filter? I have not done this, but it sounds logical when you think of the very fine particles that cloud a pool and keep going through the sand filter. In past years I did have good results using a clarifier solution to make the fine particles stop going through the sand filter. Now I am scared of adding anything but bleach and chemicals to adjust the PH.
    IG rectangular pool, 18' X 36', 18,000 gallons, Hayward S220T filter, 250 pounds of sand, 3/4 HP pump.

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    Default Re: Sand filter failure

    Both WaterMom and I, and many others have added DE and the results are excellent.
    Record your pump's pressure (on high if a 2 spd or VS) apnd keep it running.
    Add 1/4 cup of DE and wait 20 minutes.
    Wait, oh 20 minutes and see if the pressure has increased by 1pound, if so you are done. If not, add another quarter cup and wait again repeat until you reach one pound increase in preassure.
    If you go over more than two punds, just backwash it out and start again. Try 1/3 cup this time.
    Once you find the right amount, which will be between 1/4 cup and one cup, just add that much everytime after you backwash.

    That's all there is to it!
    Carl

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    Default Re: Sand filter failure

    Thanks much! That sounds like a very good plan. I had not thought about the backwash pulling the DE out but I guess that really will remove it. I am guessing that you put the DE in at the skimmer, but maybe at the pot just before the pump. I suppose either will work and the skimmer would be easier.
    IG rectangular pool, 18' X 36', 18,000 gallons, Hayward S220T filter, 250 pounds of sand, 3/4 HP pump.

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    CarlD's Avatar
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    Default Re: Sand filter failure

    No, no, it MUST be in the skimmer while the pump is running! You have to shut down the pump and shut off valves to open the pump's skimmer pot. Then it probably will clog and not distribute properly.
    Don't make things tougher on yourself than you need to!
    Carl

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    Default Re: Sand filter failure

    Carl, Thanks again for all your very good advice.
    IG rectangular pool, 18' X 36', 18,000 gallons, Hayward S220T filter, 250 pounds of sand, 3/4 HP pump.

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