I have an issue where my tiles are chipping above the water line. I use chlorine pucks 1-5ppm and keep the ph level within range 7.5-8.0. The CYA level has been between 80-130ppm.
The pool was drained last Nov 2014 after 2 season as the tiles started to chip in areas and replaced. Now not even a year later the same issue is occurring.
The pool store has never heard of anything like this and Noble Tile has never encountered such a thing, I'm wondering if it has anything to do with the type of chlorine pucks I'm using or if the CYA level is causing the problem?
Any help or ideas?