Now with my CYA locked in and I understand the 7.5 % FC of CYA for my proper FC level , how often does someone need to do the 0870 test to get the exact FC ? Daily seems crazy as the test amount is pretty small. Using bleach with zero tabs so I am assuming my CYA should be stable - Is there a way to tell how often and what amount of bleach to use without doing this test every morning or night ?
thanks !
thanks !