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  1. 6

    Cal-Hypo Tablet use in Rainbow 300?

    i have a Pentair Rainbow 300 feeder designed for 3" Trichlor tablets and would like to use it for 3" Cal-Hypo Tablets. Has anyone done this or see any problems? I don't want to add chlorine every night or go back to using Tri-Chlor. Thanks
  2. 6

    Cloudy Water w/ Chemistry fine.

    I've just opened my pool and shocked it twice > 15 FC. Looks great but still slightly cloudy and would like it pristine. FC 5.0 pH 7.4 TA 120 CH 200 CYA 70 TDS 700