What is the difference between buffering capacity and pH?
A. pH is defined as the Power of Hydrogen atoms in the water. It is read on a scale from 0 (totally acid) to 14 (totally alkaline). Discus like somewhat acid water. I like to keep mine at around 6.5. I have heard some breeders recommend going as low as 5.5. Buffering capacity is the ability of water to resist changes in pH. Water with very low buffering capacity can experience rapid large pH changes, so this is something you’d naturally want to avoid.
