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This CH test is driving me nuts, I just can't seem to get it down. I've read the extended kit directions and I believe that I was hitting the fading endpoint so today I just did the alternate method in the footnotes: I got my 25 mL sample, added 5 drops of R-0012 then continued with the...

I got my Speed Stir the other day and have been using it for all tests in the TF-100 kit. Are there any tests where the Speed Stir is not recommended to be used? I ask because it seems my FC raised when using the Speed Stir even when I didn't add chlorine which leads me to believe that one of...

So I got the TF-100 today and did my first round of testing. ~75 degree water FC 2 (I added about 1/4 gal liquid chlorine afterwards) CC .5 (first drop turned it clear) pH 7.2 TA 130 CYA 60 When testing CH, I thought I was doing it wrong, as I was keeping track of the drops I thought "this is...

I have finally decided to take control of my pool and have been reading the Pool School and these forums the past few weeks, but I do still have a question regarding the shocking process and how it affects combined chlorine. I *think* I understand the relationship but want...