We went away on vacation for a week. During that time, my parents (who happen to be my neighbors) ran the pool for me for the usual 7-8 hours a day. Prior to leaving, I shut down my liquidator and added some tri-chlor pucks to the erosion feeder. I had figured this would be the easiest route while I was away. Unfortunately, I had underestimated the amount of tri-chlor to add resulting in a cloudy pool upon my return. The bottom of the shallow end was not visible. Using what I have learned from this site, I again have crystal clear water. This process took about 24 gallons of 6% bleach over a 18 hour period. Here is the weird part; prior to leaving my numbers were:
FC : 4-5
TA : 80
After getting the pool cleared up:
FC : 1.5
pH: 7.0 (currently battling w/ borax)
TA : 90
CYA: 0 ?????????????????
I have tested several times and have failed to get a CYA reading. Currently, I have added CYA granuals and remain on the pucks to get the CYA up....also adding a lot of borax to combat the low ph associated w/ adding CYA. Does anyone have any idea where my CYA went?