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Thread: Filter Trouble

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    PaulSwany's Avatar
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    Filter Trouble

    I have fought with my pool this whole season.... I had an algae problem early on, then a cloudiness problem. My CYA was out, so my chlorine wasn't holding. I got that resolved and I was able to get the chemistry right in terms of FC, CYA, TA and PH... I have the TFP test kit and I love it! I changed the sand at the beginning of the season too... I checked my spider valve on the filter valve to make sure I wasn't bypassing. I also checked the laterals to make sure they didn't have any breaks or damage...

    My problem is that no matter how long I ran that filter, I couldn't get the in-organic particulate matter to filter out... Tried tons of clarifiers from the Pool store and had nothing but grief... Looks like a milk bath. I'm going to just drain it and start over.. It's been 3 years or so since I've drained it. I just want to make sure I don't have this problem again.

    What am I doing wrong?
    15k gallon - 24' above ground vinyl
    16" Sand filter w/ 1hp pump single speed.
    Date Installed: October, 2010

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    Mod Squad jblizzle's Avatar
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    Re: Filter Trouble

    Not sure.
    Post up a set of test results and add your location to your profile as described HERE as it will help us help you in the future.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    ThinkPad's Avatar
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    Re: Filter Trouble

    Have you tried a flocculant? It is a stronger clarifier that clumps the particles together where they fall to the floor and can be vacuumed to waste. Sand filters are the least effective at filtering small particles (of the three main types: sand, cartridge, DE). It's best to backwash that junk out, instead of having it going back into the pool. You shouldn't have to drain any of your water unless you want to eliminate some CYA or CH. Have you been keeping the normal and shock chlorine level listed in this chart for you CYA level?

    That milkiness/cloudiness could be dead algae.
    Bobby (my pool)
    18,000 gallon in ground/white plaster
    Flotec pump/Aquatech MYB100 single cartridge filter - runs 6 hours/day in evening during summer

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    Casey's Avatar
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    Re: Filter Trouble

    We don't recommend FLOC's as they are a waste of money and can be a total PAIN to deal with. Without test results, we can just sit here and play darts in the dark.

    Your sand filter needs time to do it's job. By brushing the pool daily and running the filter 24/7 and adding DE to the filter, you can clear the pool. Draining it can cause more problems and money in the end by unseating and possibly tearing the liner, causing wrinkles and not to mention the cost of replacing chemicals.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    ThinkPad's Avatar
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    Re: Filter Trouble

    Oh, so flocs are bogus. I always had the impression they worked, but again I've never used them.
    Bobby (my pool)
    18,000 gallon in ground/white plaster
    Flotec pump/Aquatech MYB100 single cartridge filter - runs 6 hours/day in evening during summer

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    Mod Squad jblizzle's Avatar
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    Re: Filter Trouble

    Quote Originally Posted by ThinkPad View Post
    Oh, so flocs are bogus. I always had the impression they worked, but again I've never used them.
    Not necessarily bogus ... they might work if the problem is not chemistry related or they might do nothing or they might make problems worse by creating a gooey mess.
    Clarifiers, floc, algeacides, etc have a function and might do something, but following our methods there is no need for the added expense.
    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
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  7. Back To Top    #7
    ThinkPad's Avatar
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    Re: Filter Trouble

    Thanks for the clarification!
    Bobby (my pool)
    18,000 gallon in ground/white plaster
    Flotec pump/Aquatech MYB100 single cartridge filter - runs 6 hours/day in evening during summer

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    PaulSwany's Avatar
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    Re: Filter Trouble

    It's been awhile since I read up on the SLAM process... I should have done that instead of draining it... However, It's down to about a foot of water now, so I'm going to go ahead and fill it. I think I'll test a little bit of what I have just to know what's there....

    Should I change my sand again to get rid of all the clarifiers? I used that floc **** and will never do that again...
    15k gallon - 24' above ground vinyl
    16" Sand filter w/ 1hp pump single speed.
    Date Installed: October, 2010

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    Mod Squad zea3's Avatar
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    Re: Filter Trouble

    No need to change the sand, but you may want to deep clean the sand filter and make sure all the gunk is out.
    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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