Have you tried a full on acid wash? Last year I had a similar issue with the aqua rite t-15 reading a little lower than my test kit. I bought a k-1766 because I was doubting the strips. In the end, I cleared it up with an acid wash per the manual.
Have you tried a full on acid wash? Last year I had a similar issue with the aqua rite t-15 reading a little lower than my test kit. I bought a k-1766 because I was doubting the strips. In the end, I cleared it up with an acid wash per the manual.
rectangle 11.5K gal IG concrete pool;; 125sf cartridge filter; 2hp 1 speed pump; K-2006, k-1766; PF:10