I have still been losing FC overnight, for over a week now, and I have been hammering away with bleach2-3x a day. I tested last night and my FC was at 6. I decided not to add any bleach and see where I would be this morning. I turned my pump off and added the Aquabot to the pool. This morning I ran a full test on all of my numbers and here is what I have:

FC 6!!
CC 0
TC 6
PH 7.5
Alk 120
CYA 25

2 quick questions-my FC didn't drop 1 bit overnight and I didn't add any bleach, yet when I was hammering away with bleach, I was losing FC every night. Could it just be a coincedence that the alien life form that invaded my pool finally died/left last night? Maybe they needed high FC levels to sustain their life forms...LOL.

2nd, my CYA dropped from 40 to around 25 in less than 2 weeks. I will add to bring back to about 40. Would a constant barrage of bleach 2-3x daily dilute the CYA?

Thanks.