I'm about a 10 days into my Bacquacil to chlorine conversion. I'm using a K-2006 kit for testing and poolcalculator.com for determining chlorine amounts to add. Initially, obviously, the FC levels were non-existent after adding almost 2 gallons of 10% liquid chlorine twice a day. But on about day 5, the water started to clear and for the last 4 days the water has been sparkling clear and I am only loosing 2-3 ppm of FC over the course of the day while I maintain 15ppm. I've brushed the walls clean of the bacqua fuzz that collected and run my "Aqua Bug" cleaner to keep the bottom and lower sides of the pool very clean. I backwashed LOTS of bacqua crud out of my sand filter over the first several days, but since the water cleared up, the backwashed water looks clean now.
Now the question... My CC stays pretty steady at 3 to 4 ppm despite the amazingly clear water. I'm wondering if the bacqua goop that is stuck in the filter media is what's keeping the CC level elevated. Should I replace the filter sand now, even though my conversion is not "complete" according to the standards from the Pool School (CC <= 0.5ppm)? I seem to be stalled and would love to wrap this up!