Thanks Atticus,
I think we do have chloramine. In fact we called the municipal water folks to confirm that they add ammonia.
I have do have a double carbon pre-RO set up. But I have a mixed bed DI after the RO. I have since found out that mixed bed DI's don't remove ammonia, probably because it does not lower the pH sufficiently to ionize it. A two stage DI with one of the stages designed to remove ammonia is what I need and I have ordered. Should be in soon.
I think we do have chloramine. In fact we called the municipal water folks to confirm that they add ammonia.
I have do have a double carbon pre-RO set up. But I have a mixed bed DI after the RO. I have since found out that mixed bed DI's don't remove ammonia, probably because it does not lower the pH sufficiently to ionize it. A two stage DI with one of the stages designed to remove ammonia is what I need and I have ordered. Should be in soon.