Shockwave 1# 68% CAL-HYPO Granular, 25253

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25253 Shockwave Granular Calcium Hypochlorite; 1 lb Bag


  • 5
    Worth the money

    Posted by Suleiman on Oct 21 2020

    Very useful

  • 5
    This stuff works!

    Posted by ABC on Aug 18 2019

    This stuff is far superior to the previous product I was using and I actually use less. For the real test I let the pool get cloudy, it had been raining a lot so perfect opportunity, the water became very hazy and started to get that greenish tint to it (24k gallon pool), I took 1 bag and diluted it in a jug and slowly poured it into the pool. Within 4/5 hours the water was already much clearer and the next morning it was crystal clear!