I have be come a faithfull reader of the pool forum..pretty much check it every day to see if i am having the same problems as someone else. I don't think i have run across this question yet though. I faithfully check my pool chemicals..pretty much every day. I started with the test strips but after listen to everyones advice i switched to a drop test kit. But honestly the numbers never changed. My question is...Pretty much since i got my PH and CYA and Chlorine under control... i haven't had to mess with any chemicals for PH and ALK...i've had rain, i've added tap water...but nothing seems to phase it. Is this how it should be? Is it normal not to mess with those much once you have them under control?