pH and Alkalinity

[curator]

Is it important to test both pH and alkalinty? I guess I don't understand their interrelationship. It seems that if you have a good alkalinity (7-11) wouldn't a Ph test be revealing the same?

Or am I totally confused?

 

[ichthyoid]

We were just discussing alkalinity the other day. I posted the link to Randy Holmes-Farley's thorough treatise for clarification of what dKH and KH are. It also describes the effect of alkalinity on pH. Happy reading!