I set up my pool exactly 2 weeks ago - 8000 gallons. Added 63 ounces of stabilizer expecting it to raise my CYA to 60. My reading a week ago indicated a level between 30 and 40. Today's reading shows close to 30. Have I miscalculated what 63 ounces should do to my pool? Thanks for any advice you may offer. Here is the stabilizer I used.