I’ve been able to maintain my pool chemistry all summer thanks to the start up advice from tfp! Sadly, it’s time to close for winter. I need to do it before all the leaves start dropping! Anyway, my question is, I need to do a SLAM before draining etc…and right now pool math is saying about 2 gallons liquid chlorine. That seems low for winterizing. My fc is at 1.5 and my cya is at 40. Does this sound right? Btw the water is crystal clear. Thanks for any and all advice.