Re:RO/DI unit

>From: Mike Bateman <vandi at well_com>
>Date: Fri, 15 Sep 1995 20:27:55 -0700
>Subject: Water quality problems...
>I sure do envy you folks that have soft water.

(Analysis snipped)

>...I am hoping that the RO/DI unit will have the gusto to remove most of
>the crap from this water giving me water than I can adjust to provide
>suitable living conditions for my plants.  Oh, and the fish too of
>course. :)
>I guess I'm looking for comments/encouragement here.  :)
I think it is a good idea get a RO unit and to use the softened water on
it.  Softened hard water is still not very good for tanks, in fact, it may
be even worse because the calcium is replaced by sodium, and if you start
out with a lot of calcium bicarbonate, you wind up with a lot of sodium
bicarbonate, which is quite alkaline.  If the unit also deionizes the
water, you may need to add back some things that the fish and plants need.
There should be some hardness, some sodium, and some potassium for the
fish.  Of course, the plants will need the complete list of macro and
micronutrients as well.

Paul Krombholz