In my kit each drop of reagent is equal to 0.5 dKH. So 8 drops = 4 dKH.

I saw that the other day at a lfs. It was in a white box, still elos but mine is in a silver box dated for 10-11. So is that Oct 2011 or nov 2010??

I just bought a ghl 4 pump doser & will be setting it up on the weekend & do not want to be wrong on what I'm dosing.

I get a light change in color @ 8 drops but for sure change @ 9 drops. So I've been under the impression that my alk is @ 8.5.
My Ph is @ 8.1, but it could be higher if I'm reading the alk test wrong, however I don't want to push my alk up without knowing if this kit is effed. What are some signs of low Alk??