Thanks for the advice. It did create some new questions. I am not familiar with the term "Makeup water", is this the same as "top off water"? Also do I really need TDS
at zero? I know the lower the better and zero if desirable but from 146 in my case for tap to 1 or 2 sounds very excitable. Aren’t the TDS
dissolved minerals in the water at parts per. million? So there is the possibility that the 2 parts are minerals I am just going to add at a higher level when I make my salt mix. If There are harmful components like arsenic, lead, zinc I think they will have already been removed by the water dept. Maybe a little chlorine but would 2 PPM
be a problem? I may be totally off on this, just my idea of how it all works
I do have new filters on the way but did not get the RO
membrane as I was told that if the TDS
was not more than 10% of the raw water it was OK, but they may be thinking in terms of drinking water and not aquarium water.