i have an aquarite and about a week ago i turned the gain down from 65% to 25% and i am sitll getting an fc of 10.5 and i only had 20ppm cya the whole time. i added cya 3-4 days ago. i can turn the gain up and hear it trip at 65% so that tells me that there is that percentage of fc in thte pool. i dont understand why i havent had any fc loss in that amount of time with almost no cya.