What is the best RO unit for the money? Where is the best place to get one? I have been useing my well water for about two years now, I think I have got some copper in my tank from the pipes in my house. I have tested everything else that is the only thing it can be. I am going to the NSLPS this weekend the get a copper test. I think it is about time to ge a ro unit. My GBTA is not looking so good, My cleaner shrimp has died, but everything else looks good.