I have been keeping a log of my testing since my drain/refill last weekend. I am struggling with staying above the min of 4ppm for my recommended CYA of 50. I performed the OCLT on Sunday after bringing my FC to 8, which remained at 8 the next morning.
Monday night my FC had dropped to 3.5. So I added ~90oz. of 10% to bring it back up to 8. Tuesday night it again was 3.5, so in an attempt to not go below 4 by the next evening, I added ~96oz of 10%.
Once again on Wednesday night (last night) my reading was 3.5. I figured, OK I am going to get ahead of this 3.5 reading, and added a full gallon of 10%. Went out this evening to see where it was....and again I am at 3.5!!! It seems like no matter how much bleach I add, I keep ending up at 3.5 the next evening.
Since I am never supposed to let it get below 4, am I at risk for algae when it drops to 3.5?
The water looks extremely clear, and we have had the hottest days of the year so far this week (yesterday was 114°, today was 112°, and it's 107° right now at 10:15pm)
My numbers tonight:
I added 70oz. of 10%, waited 30mins and retested and FC rose to 7.0. I am going to add another 96oz. of 6% tonight to bring it up to 10ppm...
Does this seem normal based on my CYA, temps, etc? I am basically going through a gallon of 10% a day at this rate...