I have been working on getting my newly opened pool balanced all numbers are in range and water is finally crystal clear. My FC is at shock level of 27 due to CYA of 60. So the question is when I conduct my OCLT test I have clear water, less than 1 CC, and I am having trouble getting my FC to stay within 1ppm. It takes about 55 drops at night and about 51 in the morning. Is there any variation in test results with these high numbers? Or should I continue shocking?