At the pool store today .

[CanuckPool]

Hey Sprocket, is Cyanuric Acid (Stabilizer) what you are referring to as Conditioner?... and I think your alkalinity level is important whether or not you have a vinyl or concrete pool, maybe what you are referring to is Calcium, which is needed for a concrete pool but is not as important in a vinyl pool... and based on your Conditioner (stab?) level of 30, an FC level of 20 seems more like a shock level, I think you should be down in the 3-5ppm of FC, maybe someone else can chime in here on those numbers...

[Sprocket]

My CYA is 30 now up from 20 . <-- at 20 was loseing alot of clorine every day to sun .

My FC is at 3 to 6 . I usually add anytime it's below 4 .

PH is 7.2

I don't really test for anything else , if I test for Alkalinity and try changeing it , it ( if I remember right ) always messes up my PH . So I quit doing it .

I have a Taylor K-2006 test kit .