Hi,

My reason for lowering pH is to be able to clear irons. So, can I add more OA to begin with if I am adding later anyway?

My concern, without understanding chemistry, is that if I change anything important if I do add more OA in the first place... It does not sound like it, but I want to be sure and I want to understand the mechanism of it.

Thanks again.

Warmly,
Tsuyoshi