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Thread: Need help with proper sequence to get back sparkling pool

  1. Back To Top    #1

    Join Date
    Jul 2015
    Houston, TX

    Need help with proper sequence to get back sparkling pool

    Fellow TFPers! I've been struggling all spring to keep algae off my pool walls. Have done a couple of SLAMs which helped temporarily, but take my eyes off the ball for a bit and it's back with a vengeance. I've been a bit delinquent on my end too, but seems like I need a Grand SLAM to get it back in shape for the summer.

    Here's where the pool chemistry is at the moment:

    pH: 8.2
    FC: 0
    CYA: 20
    TA: 60

    What would be the best sequence to bring the pool back in line? I'm confused about whether to adjust pH first, or TA, or CYA before proceeding with the SLAM.

    Also, I'm planning to clean the DE filter elements and recharge with fresh DE, as well as clean behind the lamps on this SLAM to prevent a recurrence. Should I do this before or after the SLAM?

    Also, the pool walls have a light yellow / green coat. Would be safe to assume mustard algae and treat accordingly?


    25,000 gal, in-ground, plastered gunite, Pentair NSF 60 DE Filter

  2. Back To Top    #2
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Franklin, NC

    Re: Need help with proper sequence to get back sparkling pool

    pH is always first. Then Add sufficient CYA to get to 30. SLAM away

    Ignore TA for now.

    Mustard is usually not all over the pool, but limited to the shady areas.
    TFP Moderator

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