- Joined
- May 7, 2020
- Messages
- 252
- Reaction score
- 595
No water softener. If there were copper in the RODI I am assuming it would mean copper in my groundwater, and that my cartridges are too old. If there's copper in the mixing tank, but not the RODI, I'm assuming the rrrrrccchhhh, I was going to say transfer pump but I just looked in my mixing tank and I may have a different guess. Could the metal hose clamps and pipe straps be the source. There's a lot of brown gunk in the mix tank, but the RO tank is clear. I'm embarrassed that I didn't think of this soonerHmmm... There shouldn't be copper in the RODI. Do you use a water softener?