"Jeffrey St. Clair, Ph.D." wrote in
message ...
Why not buy a neutralizer, such as this one?

http://www.petsolutions.com/Neutral-...03060+C48.aspx
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Because they've been around for a long time, most people have tried them and
they're a waste of time and money. You get PH instability. It goes up and
down, then up again. That's worse for the fish. None of these products
work as advertised for obvious reasons. Then, if you can keep the PH jump
within reason, you have more serious instability when you do water changes.
It's a lot easier to raise PH than lower it. Been there, done that,... they
wont get my $$$ agian.
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RM....
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