RD> It has always seemed so to me.  And it does make sense.  Naturally 
occurrin
RD> "fresh" water will still have some salt and other minerals in it.  Tap 
wate
RD> has had all of them removed.  There is also some stuff you can get that 
add
RD> the minerals of specific bodies of water.  I have a tank full of African
RD> Cichlids from Lake Malawi, and if I forget to add the Malawi water 
conditio
RD> the fish get itchy.  It's actually kind of funny to watch them scratch 
ther
RD> sides on the rocks!  I didn't know fish were capable of itching.
I don't know of any water company that removes the minerals from the
water supply. This is why one of the biggest water pipe problem is
mineral build up. That's why many homes etc, have water softeners.
In fact, a few areas in the country, have too much salt in the water
supply, causing problems for some fish.
--- ViaMAIL!/WC4 v1.20a
---------------