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Re: Seachem: Onyx

>My question now is, what is the differance between the Onyx gravel and the
>Flourite Black?

There are two differences: the Onyx gravel is slightly larger than 
Flourite and it has a very slight buffering effect. In totally 
unbuffered water whose pH has been brought down to around 6.8 with 
some Acid Buffer the pH will slowly rise to around 7.2 over the 
course of a few weeks. However, in a moderately buffered system this 
effect is neglible.

-Greg Morin

Gregory Morin, Ph.D.  ~~~~~~~Research Director~~~~~~~~~~~~~~
Seachem Laboratories, Inc.      www.seachem.com     888-SEACHEM