I primed the spa with sodium bromide, added chlorine as oxidizer (2-step method outlined in the sticky post). I am using Taylor K-1000 to test for bromine. Question is, is it chlorine or bromine I am looking at?! they both use the same reagent (OTO) so I have no clue if I am measuring the oxidizing bleach that I added, or the sodium bromide turned into bromine? Do I need to wait a certain amount of time for the chlorine to do it's magic before measuring bromine levels?
Also, I understand it is recommended to use Taylor K-2106 for bromine. Is it another color-matching kit? or will I be counting drops? there is surprisingly little information available on this kit, I would like to know how it works before spending $57.