Hi! I came across this community when trying to figure out why our 24 ft above pool won't hold chlorine. Initially, I thought it was lack of CYA and at first, that seemed to do the trick. Fast forward 12 days after vacation and no maintenance. We arrived home to a pretty clear pool but our test strip indicated zero FC. We added three lbs of dichloro granules and 3 bleach tablets to the skmmer backet. My husband brought a case of this and didn't realize is was also stabilizer. The next morning and every day since, the test strips show zero FC. I havent been using kits before now but ordered the Taylor 2006C today (scheduled to arrive on 7/19). Each day, we have vacuumed and scrubbed the walls plus ran the pump. I picked up some HTH 6 way text straps at Walmart thinking my CYA must be way high and I was dealing with chlorine lock but it is less than 20. I don't feel like I can trust the test strip but 7/19 is a long ways off and I would like to get the FC up. I also bought 5 lbs HTH Cal Hypo today but haven't treated the pool yet. I don't know what my next is and would appreciate any thoughts the group may have to offer. Thank you in advance!!!