Had to give myself a face palm today when I tested my water and my CYA level rose...this year my levels were finally manageable (started at 40 this year) after total mess up on my part last year (well and the pool store guy who said I needed chlorine tabs with stabilizer in addition to all the shock it) and I refused to partial drain last Aug. In a hurry with the heat of summer already in full swing, I tried to cheat...yes I can admit it. But in my defense I did try to look for Shock It without stabilizer and thought I found it...ah not! Sadly I checked pool school after and not before. So now with my 60 cya and my fc 35 (FC dropped from 45 when I tested in morning), I want to add more bleach overnight to prevent additional FC loss. I know my FC is more than the 40% for SLAM, but I am afraid to wait until morning as pool gets full sun almost all day. Thoughts please! I want to say I have been following this site for a few years and after reading post after post and my own trial and error, there are no short cuts! We always get behind opening our pool because our weather gets hot fast and rain. Hard to monitor the SLAM. I took me awhile to understand the whole SLAM process, but the test kit (Taylor K-2006) was a necessary purchase that I didn't get until the end of last year. So bleach tonight and how much? Or no bleach and take my chances in the morning with new test.
Thank you all for this wonderful forum...most of my problems would have been eliminated years ago if I just followed the instructions!