I'm trying to get a better grasp of how to effectively maintain my FC levels. Up until last weeks heat wave, my pool has been clear with no problems. The heat wave brought algae, so obviously fc levels weren't high enough. I currently have a Pentair 300 offline chlorinator set to the max. I find that I need to also add a gallon of 10% chlorine every other day, but with our recent heat wave, it's more like everyday.
Anyway, it seems like I shouldn't need to add so much chlorine with the automatic feeder(tablets). I've checked the feeder, and the tablets are dissolving and disappearing, so I'm assuming it's feeding into the pool. My biggest clue that there may be a problem with feeder is that my cya level hasn't risen, despite adding conditioner twice(once at pool opening to make cya 0-20, again a few weeks ago to bring cya from 20-30).
So, does anyone have a simple way to test the chlorinator device?