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Thread: Need so second opinions....mine might be off.....

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    Need so second opinions....mine might be off.....

    FC 7.5
    CC <.5
    Ph 7.5
    TA 50
    CYA 45
    Hi's the deal. Water looks great!! Keep getting clumps of green algae on bottom daily. Have taken it to shock level and kept it there until OCLT and all tells me it is done. Then the "MAYBE" issue. Had to take may light out for repair/replacement and found some "crud" in the bottom of the niche that looked yellowish/light green. Easily brushed out and disappeared. Light was in for 5 years without moving.
    Now my thoughts are to take it back to shock level and then up to mustard level for 24 hours.
    So what do you pros think? As always, you guys rock!!!
    Thanks in advance,
    16,000 IG, SWG, 175 sq. ft. cartridge, 1.5 hp pump, vinyl, Charlotte NC
    TF-100, Pool School, Pool-Calc

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    Charlie_R's Avatar
    Join Date
    May 2013
    Mexico, MO

    Re: Need so second opinions....mine might be off.....

    With the light niche cleaned now, you can go with the normal shock, and if it recurs, the go to mustard.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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