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    mas985's Avatar
    mas985 is offline Lifetime Member Whizbang Spinner mas985 3 stars mas985 3 stars mas985 3 stars
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    Default Re: Filter/Pump Unlevel - Problems & Questions

    The filter pressure is dropping because there is a reduction in flow rate. Most likely a partial blockage in the suction line or something is stuck in the pump impeller.

    If the elevation drop kinked the line anywhere, that may have caused it.

    Also, you can first try to flush out the suction line backwards through the pump basket using a hose and rag to seal the line.

    If that is ok, open the pump basket remove the basket and see if you can see anything stuck in the impeller. You may have to remove the motor to fully clear it.

    Also, to kill the algae, you need to shock the pool. Chlorine got too low for your CYA and algae took hold. Filtering only removes dead algae but does not kill it.
    Last edited by mas985; 08-03-2009 at 03:31 PM.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    jmaj43 is offline ** No working email address ** jmaj43 0
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    Default Re: Filter/Pump Unlevel - Problems & Questions

    Thanks for the response. I have brought the pool up to shock levels so we should be OK I will run it for at least 24 hours straight or until it clears up.

    How does the method of sucking out the lines work? Do I have to use my shop vac on reverse? Is there another method?

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    mas985's Avatar
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    Default Re: Filter/Pump Unlevel - Problems & Questions

    Quote Originally Posted by jmaj43 View Post
    Thanks for the response. I have brought the pool up to shock levels so we should be OK I will run it for at least 24 hours straight or until it clears up.

    How does the method of sucking out the lines work? Do I have to use my shop vac on reverse? Is there another method?
    Not sucking out the lines but blowing them out with water.

    The easiest thing is to use a garden hose forcing water through the pump inlet back out the skimmers. Seal around the hose with a wet rag so it can build some pressure.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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