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Thread: High CYA and algae

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    High CYA and algae

    Mod edit: Split from another topic. Please start a new topic to get your specific questions answered.

    Cya 115 algae everywhere 9800 gallons..
    18'x36' In ground pool - roughly 25,000 gallons; Sand filter; Vinyl liner;

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    pwrstrk's Avatar
    Join Date
    Aug 2012
    Elverson Pa.

    High CYA and algae

    computhan14. Please put your pool info in your sig. It'll help us help you. How did you obtain that CYA level ? If your CYA level is truly 115 you need to get that level down to 30-40 ppm. To do that you will need to do a partial drain and refill. Then you will need to SALM the pool.
    With 9800 gallons to lower your CYA level you need to replace about 65- 75% of the water. It may make sense to drain it and start over.
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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