I have an inground 12,700 gallon vinyl-liner pool near Sacramento, California. For the past couple years I have used pucks and bags of shock, and this summer I developed a bad algae problem that took about 2 weeks to clear up with constant brushing, vacuuming, backwashing, running the filter and adding bags of shock. The pool is now algae-free and looks great, sparkling and clearer than ever. Last week I found the troublefreepool website (which is wonderful) and I have just switched to BBB. The pool still looks great but I am concerned about the CYA level being really high. Will the CYA level eventually go down on its own, and if so, how long will that take through normal evaporation and backwashing? Should I even bother with draining or partial draining if the water looks so great? I would have to get a permit from my City to drain and that would be a hassle. Here are my most recent test levels:
FC 1.0
pH 7.5
TA 100
CH 85
CYA >100 (probably around 150 but the test kit is only marked to 100)
FC 1.0
pH 7.5
TA 100
CH 85
CYA >100 (probably around 150 but the test kit is only marked to 100)