I have searched all over the site but can't find what I'm looking for. I did a CYA test with my K2006 kit and the water in the test filled to the top of the tube is still clear, I can see the black dot plane as can be. I know this is limited info but is there a reason it tests like this. The kit was bought last year and I just got a fresh set of supplies in for it last week and used them. Water is clear. Still coping with the NC yellow pine pollen and those long stringy things off of trees. I have not done the major cleaning to my DE filter system yet. Was going to wait until the pollen season was over, at least the pine pollen. Pool was open all winter. Pump has been running 24/7 for the past month. All of last year my CYA was at 100, I have only used standard bleach all of last year. Nothing with CYA. The pool has been partially drained, maybe a 1/4 at the most, we are in drought here and I hate to use the water if I don't have too. This spring rain has brought it up past the skimmer twice. I had to drain back down to skimmer level. Much needed rain and I'm not complaining.
CYA don't know test doesn't go any higher than 9 on the tube.