In the past few months i've probably added atleast 10lbs of stabilizer/conditioner but I always get a reading of around 50-60. I broke down and went to the local pool store and they got a reading of 35 and told me to try completely cleaning out my DE filter. I did that on the 5th and then added 3lbs of stabilizer in 2days... 10 days later I'm still getting a reading of 50-60. I tried the bucket test and i'm not losing any water. I've tried 2 different brands of stabilizer with no change, my only other thought was to try liquid instead of granular. Any thoughts?