Emptied 2/3 and refilled. Now down to 55 CYA. Wish me luck!
Pool store this morning told me that 'adjusted' TA is what we should be looking at, which is function of TA and CYA. Is this true? Pool math and the recommended levels table both just state TA.
JasonLion has this summed up very nicely in this post, http://www.troublefreepool.com/threads/8141-The-1-3-Rule. His answer is about the 8th response.