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Thread: 1st time sand filter start up

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    Join Date
    May 2007

    1st time sand filter start up

    I just got our new pool filled and I am starting up the sand filter for the 1st time. It is a 200# sand filter and I have 100# of Zeobest filter media in it per the pool store's recommendation. I have backwashed it so far with 400-500 gallons of water. The water coming from the back wash hose is still cloudy. Should I keep backwashing until it is as clear as the water in the pool?
    I'm afraid if I turn it to filter, I will cloud up the pool.
    My pool:
    10,400 gallon AG, 1hp 2 speed pump, 21" sand filter

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD
    You want to backwash till the water is clear or all that cloudiness will go into your pool. It is supposed to take 5-10 minutes.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Sorry I didn't add more to my post. Someone came to the door and I just got freed up

    That link is to the zeobests backwash recommendations for start up. Make sure you have your speakers on. It's starts talking right away

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