I've been testing w/ TF100 and SpeedStir daily. However, it was dark this evening when I got to get out for my FC/pH measure for the evening, so I turned on the extra light. For the first time ever, .5 CC registered... Took another sample of pool water and came inside to do it under normal lights - no pink, so no CC. Have I been missing this all along and the light just brought it out? If so, I'm going back out and retesting EVERYTHING with that light on and turning the pump/SWG on all night! (Like I said, never had CC register, so it's freaking me out a bit!)
BTW - FC was 5, pH was 7.5
BTW - FC was 5, pH was 7.5