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Thread: Removing water for cya Biologically

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    Join Date
    May 2015
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    Austin, TX
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    Removing water for cya Biologically

    Has anyone used the new product for removing high levels of CYA? I am at 200. BIO-ACTIVE reducer is the product, and I cannot afford to do a water exchange with water restrictions. Thanks.

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    Patrick_B's Avatar
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    Jun 2011
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    Re: Removing water for cya Biologically

    Hi Danny, welcome to TFP!

    Yes, there have been several people make reports on using this product here in the deep end forum. Unfortunately, there has been little success to report.

    I would think with all the rain Centex has been getting, that restrictions will soon be lifted if not already where you are. Right now, replacement or extremely rare RO treatment are the only viable methods we know to recommend for Cya removal.
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    Texas Splash's Avatar
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    Re: Removing water for cya Biologically

    Danny, I've seen this asked before, so I'm going to ask you now ... What did you use (or how do you know) your CYA is over 200? Reason I ask is because some test kits, at least the TF-100, only go up to 100. Anything over 100 is treated somewhat as simply "exceeded". We might have some more advice for you based on your reply. Also, consider adding your pool info into your profile signature settings for the TFP experts to see in advance. Thanks.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Mod Squad pooldv's Avatar
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    Re: Removing water for cya Biologically

    Welcome to TFP! Is lake Travis still low? Our lake went from 13' down to 10' over and the dam is wide open. Yes, mixed to poor reviews so far on CYA reductions. There are quite a few threads going on it. Really partial drains and and refills is the only option right now.
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