My pool has been complete and running since January. The pebble finish was very consistent throughout the entire pool. Lately I've noticed some lighter areas and some lighter streaks developing in the plaster. I test the water weekly and follow the advice and target numbers in pool school. What could be causing the inconsistent colors? Could my low CH level be causing it?
test results from this morning.
PH 7.8 (I added some acid to bring it down to 7.5)
I tried to take a couple pictures but you couldn't notice the color changes in the pics.