Disappearing chlorine

[arjayh]

.Watermom........I took your advice and did the overnite thing again. On

7/12 @ 7:45 pm I added six 121 oz jugs of 8.25% bleach.....
7/12 @ 10:45 pm my fc was apprx 15.

7/13 @ 6:30 am it was also at apprx 15
7/13 @ 4 pm same day it was apprx 10+..........

7/14 @ 4pm it was down to 4 (air temp was 102).

7/15 @ 1:30 pm fc was at 1.5

My first three readings of 15 - 15 & 10 were my best guess/approximations as it is difficult to be exact at levels well above 5 even though I used your chart.

My questions now are............is this a normal decline in this space of time and how can I switch to bleach if is going to require every other day attention. I may be gone for a week or two at a time. So I will have to go back to trichlor tablets to have my freedom............that is providing the tablets work which they have not been doing. I put two 3 inch tabs in each of two floaters today to see if the shock treatment allows the tabs to maintain a proper fc level hereon.

One last bit of info for you, I had been adding a product called Phos-Free to my pool. It's an organic product that eliminates phosphates from the water which is supposed lessen the risk of algae. Would appreciate your comments on all of this.

Thanks.