I say that from my experience. The fish always seem to do better with the
water slightly alkaline than slightly acidic. I have never had any problems
at all keeping any fish in our water of 7.8ph. Tetras, angels, discus, rams
all love it. The angels even breed in it. But anytime I have tried keeping
fish in slightly acidic water, the fish that wanted the alkaline water
always ended up getting sick or getting fungus when they got hurt. Fungus
seemed to be a lot more common in acidic water than in alkaline water. This
has just been my experience of course. It was also recommended by one of
the best mom and pop fish stores in town. All of their tanks were kept at
7.8 and they always had the healthiest fish in town. The proprieter told me
20 years ago that it is easier to keep fish healthy in alkaline water than
in acidic, and I found it works better for me.

btw, I am not talking about hard or soft water, only the ph.


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Margolis
http://web.archive.org/web/200302152...qs/AGQ2FAQ.htm
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