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Thread: DE going back into pool

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    DE going back into pool

    After backwash, I add the DE, I know to put in only 80%. A few weeks ago, I took the filter out to clean the fins. After I put them back, I put in the full DE amount for my filter. I noticed DE going back into the pool. Any ideas? Is the full amount after cleaning still too much


    EDIT - This morning, I bw'sd the filter, put in some DE and out from the jets came the DE. I turned it off. Took the fins out to see, they werent that gummed up at all. I took them out, cleaned all of them, rinsed out the bottom of the filter. Put it back together and turned it on to get the air out. Once it was primed, I put in one scoop of DE, i watched the jets, out came some DE. Why?

    Thanks
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Re: DE going back into pool

    anyone?
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Re: DE going back into pool

    no one ?
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Mod Squad pooldv's Avatar
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    Re: DE going back into pool

    If a pool filter is letting dirt get past it then there is something wrong with the filter. It is either put together incorrectly, a part is broken or the filter material is damaged.

    Maybe this tutorial will help to find the problem, Use and care for DE filters
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    Re: DE going back into pool

    Quote Originally Posted by pooldv View Post
    If a pool filter is letting dirt get past it then there is something wrong with the filter. It is either put together incorrectly, a part is broken or the filter material is damaged.

    Maybe this tutorial will help to find the problem, Use and care for DE filters
    thank you but I have read that before and done it according to that. I took the filter apart a few times, made sure it is properly back together. When I start the pump back and put new DE in, I see it coming out of the jets.
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Re: DE going back into pool

    There has to be a leak or gap somewhere. Things to check: every inch of filter, broken or cracked plastic case, rubber seal, etc. You will see DE on most of the filter but not much around where the problem lies as the water (and DE) pushes through the problem area. I know they are tough to find, you'll have to look closely on where the DE is escaping.
    '91 Chicago-land Vinyl In-ground Pool: 41x16. 6' deep end / about 20,000 gallons. Hayward Perflex DE filter. Polaris Watermark G1000 Chlorinator (used by previous owner, not me). Hayward H200 Heater. Aux Pump for pressure side robot. (2) skimmers opposite of each other mid-pool, (1) bottom drain, (2) returns on opposite ends of pool lengthwise.

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    Re: DE going back into pool

    Quote Originally Posted by SmokeLawn View Post
    There has to be a leak or gap somewhere. Things to check: every inch of filter, broken or cracked plastic case, rubber seal, etc. You will see DE on most of the filter but not much around where the problem lies as the water (and DE) pushes through the problem area. I know they are tough to find, you'll have to look closely on where the DE is escaping.
    Thank you for the reply, so I will take it all apart and look for a DEless area.
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Mod Squad jblizzle's Avatar
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    Re: DE going back into pool

    Check that the backwash valve is in the right orientation and not damaged as well.
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    Re: DE going back into pool

    Quote Originally Posted by jblizzle View Post
    Check that the backwash valve is in the right orientation and not damaged as well.
    gotcha, will do Thanks
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Re: DE going back into pool

    took the filter out and inspected all of the fins. they ll look good, no cracks on any pipes. i washed it and put it back. I inspected the backwash valve and it is in the right position.

    I put more DE in and it came out the jets again when I ran the filter

    How can I tell if the valve is damaged or not?

    Thanks
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Mod Squad jblizzle's Avatar
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    Re: DE going back into pool

    Only way I know is to open up the valve and inspect it.

    Which kind of valve do you have?

    Maybe post up some pictures of what you are looking at.
    Jason, TFP Moderator
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    Re: DE going back into pool

    this is the lever Attachment 52308
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Mod Squad jblizzle's Avatar
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    Re: DE going back into pool

    So take the top off the filter valve and make sure the spider gasket is still intact. Just pull the 6-8 screws around the outside.
    Jason, TFP Moderator
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    Re: DE going back into pool

    Attachment 52310Attachment 52311

    Here is what it looks like. I didnt see any cracks
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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    Re: DE going back into pool

    I had one of these, roughly the same vintage based on the looks of things and had the same issue. I would bet it's the filter element. Likely torn very slightly in a spot difficult to see, but easy enough for dt to pass through. My ex pool guy made up all sorts of garbage, sand, excess chlorine, etc, but only after he took it apart and inspected for an hour did he find the hole. How old is the internal filter element? How often do you remove and clean?
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    Re: DE going back into pool

    Quote Originally Posted by yetis View Post
    I had one of these, roughly the same vintage based on the looks of things and had the same issue. I would bet it's the filter element. Likely torn very slightly in a spot difficult to see, but easy enough for dt to pass through. My ex pool guy made up all sorts of garbage, sand, excess chlorine, etc, but only after he took it apart and inspected for an hour did he find the hole. How old is the internal filter element? How often do you remove and clean?
    Thanks for your reply. So you are saying it is not the lever assembly but the filter fins? I usually take the filter out a few times a year to clean it. So far this year I have taken it out four times. Yesterday when I took it out It had some small bare spots but I figured it may have been from me clumisly taking it out. I am short and its kind of heavy wet and full of gunk. I didnt hit it on any thing to tear it but it did bump on my body and legs

    I took the fins out one by one and looked at them after spraying but did not see anything obvious. But if it is a small tear, I could have missed it. I will check the fins again very meticulously

    Thank you
    Gunnite IG , DE FNSP36, FR90, 14000 gal.

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