I'm waiting for the FC to fall a bit more before I try a pH test and let the kids in. FC is currently at 10, I have the spillover from the spa running.
I tried retesting CYA, and it looks like its mostly gone at 20, but definitely visible at 30. Any suggestions on how I should proceed regarding the CYA? We need to clean the filters again today, so I'm thinking we'll take a swim later, and the clean the filters, and any CYA additions will be after the filter is cleaned. Do I just need to wait out what I've added up to this point, for a few more days to see if the CYA creeps up? or Do I go ahead and add half of the pool math recommended CYA (1lb 8 oz by weight), after I've cleaned the filters?
Related to that - I haven't used the CYA standardized solution. Is it reusable? Can I compare with it, and pour it back in the bottle to reuse at a later date?
And then follow up to that - should I am for higher than 30?