I recently used the Bio-Active product in my pool to lower the cya, no change. Customer service sent me a free bag with specific instructions, no change. I have to wait on a drain and fill. I recently fired my pool company and started doing it myself. tell me what you think of these levels.
fc = 4
ph = 7.8
cya = 100
Water looks great, have never had an algae problem. Am I worrying too much about specific #s?