"Jan" wrote in message
...
I recently set up a 20 gallon tank, and added 1 female guppy with some
young ones. The pH is 7.8 - is this too high? This is pretty much what
comes out of the tap, so should I try to lower it artificially? I am
planning to add other tropical fish in the future (probably neon tetras
and platies).


Generally speaking, it is much better to match the fish to the water than
the reverse. I suggest you leave your water alone. There is nothing
wrong with 7.8pH that Guppies and Platys will not adapt to easily.
Whether Neons do as well will have more to do with how hard the water is
and whether they are wild caught or farmed fish (which you probably
cannot determine).
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