So Cal check in...

K2006...

I've always done my own testing, I've just never been so zealous about it!

I swap out the water every four - five years, cause I can tell by the amount of chemicals I'm using, it's just not right anymore.

It's nice to have confirmation of what I suspect, and to be able to dial it in even more.

Im dealing with the combined chlorine issue right now. I should probably make a new thread....