Hello all - I used the TFP method and testing last summer after a friend recommended this place with great success. This year, after a lot of rain and evaporation, it seems like my CYA level has dropped from the 60's last year to at least under 30 this year. All numbers are below.
Question - before I found this place, I bought a ton of chemicals recommended initially by the pool store that I still have in the garage (Cal Hypo shock and the chlorine pucks), and I'm wondering if I can make use of them now to raise the CYA and keep chlorine at normal levels.
FC - 4
CC - 0