This time of year the only chlorine I can get is in the form of bleach from the grocery store, and they've all moved to "concentrated" formulas.. the old 6.0% 121oz jugs are now 7.4% 81floz jugs. PoolMath does not have a selection for 81fl, and I am horrible at math.
Unless I just don't see it
Unless I just don't see it
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