So I switched to this method mid summer last year after finding this site. It seems like I just cannot keep my pool blue and clear. My CYA is 50, so my target FC is 6. I check EVERY MORNING with my Taylor test kit I got from the recommendations off here and if my FC is below 6, I use the pool calculator to bring it up to target. (I also adjust Ph if needed; TA seems to stay stable.) CC always reads 0. It seems like it will be clear for a few days, then if the pool is not in use for awhile, even if the FC stays stable, I start to get green gunk on the bottom. I can see it if I brush. I do put a cover on the pool so it doesn't get brushed every day. Is that the problem? Also, we run the filter on low for 10 hours a day. Is that not enough? I'm just getting frustrated b/c my neighbors seem to have no trouble with their pool using the puck method, but this method makes so much more sense that I really want to stick to it. Does it make a difference keeping the cover on all the time? (Like for maybe 4 days in a row with no use?)
Today I checked my FC and it was 5.5. My son went to swim and I've got that gunk on the bottom again. Does that mean I need to do shock level again???? I thought if the FC didn't drop, then I was free of any algae. I figured if I checked every day and stayed on top of it, this wouldn't happen. What should I do? I'm frustrated. I really don't want to spend one day every week keeping my FC at shock level. and filtering 24 hours for 4 days, to have one day of crystal clear water. Everyone on here makes it seem so easy, what am I doing wrong?