dchao
New member
Both baking soda or marine/reef buffer will do. You'll need to keep calcium neutral, and at the same time as adding buffer and keep alkalinity high. In a FO tank, there is a lot of waste to process, specially the ammonia stuff that cannot be remoeved by the skimmer. This process will lower your pH and the only thing that can stabilise the pH is the buffer. But as it's doing that the buffer will be depleted very fast. Therefore it must be supplement manually, and quite a lot, compare to a reef tank.