Unless you are having to replace a lot of water, CYA levels should stay fairly level. Chlorine and PH are what I check the most.
 
Well, let's see. The last time I tested the water my results were: FC 7, CC 0, CYA 70, TA 90, PH 7.8. I do test these things. Just needed some refill on cya and thought I'd get R-0871 while I'm at it. I have been testing cya more than normal because last year and earlier this year I've had too much rain. Been having to dump alot of water seems like. Maybe I'm just being over cautious. Water always looks good.uploadfromtaptalk1470074554401.jpg

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