[drjosay]

Hi Reefers.
Been a while since I last had a system running. Been doing a lot of home improvement projects the last 12 months and one of the last ones I plan is installing a water softener in the home.
As I was planning, I found a particular system that also includes a whole-house filter unit connected to the water softener unit. It's a secondary tank that uses activated carbon to remove chlorine/chloramine before reaching the water softener.

Couple thoughts (please feel free to comment on any or all):

1. If I run a line off the activated carbon tank (after removing all chlorine/chloramines, but before the water softener), would I really need to run that through an RO/DI unit? My thinking is if the chlorine/chloramine is removed, all I'm left with are TDS. Not toxic, just TDS.

2. Do I still need to run a line through an RO/DI for the filtered, soft water?

Ultimately, I will probably do a Fish Only tank. However, I understand if I move into any type of corals or sea anemones, I will need 0 TDS. Been there before.

Appreciate any thoughts/feedback.

Thanks