The hard water should not pose any problems, and would be better than the
soft water. As for the salt, many people salt their ponds for various
reasons, and the level of salt from the softener should not pose any
problems. The well water having some hydrogen sulfide in it would be more
of a worry to me, since hydrogen sulfide is highly toxic to fish. If the
water was sprayed up and into the pond, maybe most of the hydrogen sulfide
would be dissipated, and the water would be good. Of course a mix of the
waters would also work.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html

"Farias" wrote in message
. ..
I am about to build a small pond (a couple hundred gallons) and am
wondering about what water to use. I live in the country in central Texas
(aka the Hill Country) and the water that comes out of our well is very
hard, with plenty of calcium compounds, some iron and some hydrogen
sulfide.

My plan is to initially fill it up with water straight from the well (I
figure it's good enough for native fresh water fish that live in our
springs and creeks). We have long hot summers here, though, and I know I
will have to be replenishing often due to evaporation.

This presents two problems. One is concentration of minerals from
evaporation. I figure the solution is just to pump out some old water
regularly. The second is the constant refilling. I wanted to install a
trickle supply from the tap (the well is too far away to run pipes to the
pond). The tap water has gone through a water softener, though, that
tends to leave a lot of sodium chloride in it . So eventually, through
refilling, the pond will mostly contain somehwat salty tap water.

Am I going to have problems growing fish in this water? Are there certain
species that will do better? Would potassium chloride be better than
sodium chloride ?
Any info appreciated. Thanks,
Sam