Watermom.......I bought 4 gallons of 8.25% bleach which I thought would be enough to bring the fc up to 15, but I fell short.
At 8:45 pm on 7/09 I put the 4 gallons into the pool with the filter pump running. Then at 11:15 pm I tested and guessed the fc to be about a 9. It was a dark yellow without any tinge of orange which would suggest in the teens. I tested it again the following morning (7/10) and it was the same dark yellow ....which I guessed to be a 9. I tested it again at 3:30 pm and it was still the same 9 with ph at 7.6. Today...7/11 at 2pm it tested at 2. Does this pattern sound normal or does it appear I still have a problem? And if I shift from trichlor tabs to bleach it seems like I will be adding bleach daily. The cheap store brand bleach is $1.99 a gallon and the concentrate level is not stated on the label. I'm guessing it's about 6.0%. What do you recommend now?