ajw, just curious, how often do you suggest checking FC and pH? I've been pretty obsessive about it, check daily, sometimes more if I checked in the morning and soak in the evening, or checking before and after adding chemicals. I wouldn't mind checking a bit less often, maybe every other day, or after soaking. Altho I've also wondered if you get accurate results right after the tub has been used. Also wondering if I need to check FC as often since I'm using an SWG now.