FAQ: What is the difference between Seachem "Acid Buffer™" and "Acid Regulator™"?

The difference is that Acid Buffer™ is a straight acid source and Acid Regulator™ is a phosphate based buffering system. Acid Regulator™ has a greater ability to maintain a pH as where a straight acid source can have a slight pH drift. When you are trying to avoid any additional phosphates I would go with the Acid Buffer™ and Alkaline Buffer™ products but if that is not an issue, then the Acid Regulator™ will maintain a more constant pH.