I know angels can breed in water with a pH of up to 7.6, but mine is a little higher than that. Has anyone bred them using just buffers, or do you have to truly soften the water and drop pH using RO, peat, etc.?
Actually I have learned that they can breed in 8+ with no buffers, distilled, RO, or driftwood.
Buffers are used to control pH and get it to and keep it at a specific pH. Additives and traces are used to add minerals. I am not in the angel breeding business, so I don't need 100% hatch rates. RO units are expensive and not warranted for my needs. If I ever jump into breeding discus, maybe.