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Thread: Possible Filtration problem

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    Possible Filtration problem

    I have a 35K play pool running SWG circupool. Filter is a triton sand filter with multiport valve. FAC 3.2 TAC 4.4 PH 7.5 ALK 115. Every now and then I will have a problem with what looks like to be foamy scum on the pool surface. It happens usually every other week and I think the filter sand is not the right type. I have attached a pic, not sure what the deal is.
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    Commercial Pool Facility| Pool 35,000Gal, Pentair Inelliflo VS, Pentair Triton II 140, CircuPool SI 35 +| Indoor Spas 12,500Gal, Pentair Intelliflo VS, Pentair Triton II 100, Circupool Si 25+| Outdoor tub 10,000 Gal, Pentair Intelliflo VS, Pentair Triton II 100, Circupool Si 25+

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    Re: Possible Filtration problem

    If it hap[pens every other week, I would say a sand filter would eventually clean itself and it would stop or lessen.

    Are you putting algaecide in the pool?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Possible Filtration problem

    it looks like pollen to me? maybe wind change?? Try doing a deep clean on your sand filter..

    how long does it take to filter out?
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

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    Mod Squad tim5055's Avatar
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    Re: Possible Filtration problem

    Am I reading it corectly that there is 1.2 CC (4.4TC - 3.2FC).

    From your location and the reflection of the overhead lights I assume this is an indoor pool?

    Is there any CYA in the water?
    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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    Re: Possible Filtration problem

    CYA 10, It is indoor pool
    Commercial Pool Facility| Pool 35,000Gal, Pentair Inelliflo VS, Pentair Triton II 140, CircuPool SI 35 +| Indoor Spas 12,500Gal, Pentair Intelliflo VS, Pentair Triton II 100, Circupool Si 25+| Outdoor tub 10,000 Gal, Pentair Intelliflo VS, Pentair Triton II 100, Circupool Si 25+

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    Mod Squad tim5055's Avatar
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    Re: Possible Filtration problem

    With the high CC I'm going to guess you have a situation similar to a hot tub where waste products are not being oxidized and are causing the "scum". You may want to look into using an MPS shock.
    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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    Re: Possible Filtration problem

    Are you putting algaecide in the pool?




    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Possible Filtration problem

    I am not putting algaecide in the pool. I think it could be a lot of waste that is not oxidized. Thinking of maybe adding MPS shock after high use?
    Commercial Pool Facility| Pool 35,000Gal, Pentair Inelliflo VS, Pentair Triton II 140, CircuPool SI 35 +| Indoor Spas 12,500Gal, Pentair Intelliflo VS, Pentair Triton II 100, Circupool Si 25+| Outdoor tub 10,000 Gal, Pentair Intelliflo VS, Pentair Triton II 100, Circupool Si 25+

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