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Thread: Replace or add sand?

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    Replace or add sand?

    How do I know if my sand needs replacement? My pressure is usually at 21-22, I'm having an algae problem. And high levels of Chlorine are not helping. The sand is about 6 yrs old.
    16' x 32' oval 13k gallon AG, AquaStar DE filter, 1.5 HP two-speed pump, NewWater inline tri-chlor feeder, Pool Rover robot

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    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Replace or add sand?

    Please start your own thread when you have a question.

    Welcome to the forum

    Many say that sand never needs to be replaced.

    What is your clean filter psi?

    If you post up water test results we can help you best
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    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Replace or add sand?

    High levels of chlorine will cure an algae issue and changing sand will have no effect. Read the ABC's of Pool Water Chemistry up in Pool School and ask lots of questions. We'll help you get the pool clear and you won't need to change the sand.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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