Just a quick question ... CYA is 50, so shock level is 19.8 (30,600). I've kept it at shock level for 6 days now, testing and adding bleach as needed morning and evening this week. The tests were getting to the place where my early morning reading was just 1.0 down from the adjustment the night before, heading for the .5 drop and less than .5 CC target to indicate algae is gone. This morning's test was down 2.5 in FC and needed 2 96 oz. bottles to bring it back to shock level. It didn't rain last night - so .... I'm wondering what could have caused the variance this morning?
Chris - Arkansas