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Use "The Pool Calculator" in Jason's sig to determine how much to add. Buy 6% Ultra Bleach (cheapest brand) at grocery store and add slowly, really slowly, around pool. I'm estimating you will need 2 gal bleach to raise FC from 7.5 to 13. You will have to lower your CYA no matter what method of...

Thanks Waterbear. Remember I said I'm cheap. I calculate that I can use the 25ml mark on the test vial to estimate 26.4ml and use 3 drops of the R-0004 to get the right proportions or make a 44ml mark on the test vial and use 5 drops. Is my thinking correct?

I mistakenly purchased a bottle of Taylor PH reagent R-0004 instead of R-0014. The R-0004 must be for a larger test sample than used for my R-0014. Does anyone know what size test sample is used for the R-0004 reagent? I hate to throw anything away and I'm very cheap.