Doing the dissapearing dot test in the afternoon after a nice cold beer certainly couldn't hurt. Still being a bit new to it a bottle of 50ppm standard solution goes a long way. And comparing the results to previous results gives me a bit of confidence too.
Amazing how we can put a man on the moon and find the Titanic but can't come up with an accurate CYA test...
I'd rather spend my money on beer...
Go it. So..to raise my CYA... I test and then drink beer. When eyesight gets blurry redo test. Black dot should be harder to see. If CYA isn't as high as I think it should be then I drink more beer. Repeat test. Still low? Repeat beer drinking until CYA reads within limits or I fall in the pool. Whichever comes first.