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Re: onyx
In a message dated 09/01/2000 3:54:45 AM Eastern Daylight Time,
Aquatic-Plants-Owner at actwin_com writes:
<< I was pretty
surprised that the Onyx leached enough buffering capacity to get the pH so
high...9, I believe. So if you started with neutral 7 pH water in a tank,
added a few inches of Onyx, will your pH skyrocket up to 9? >>
Carmen, I too was considering Onyx as a substrate choice. Seachem states
that it has a buffering capacity. Since my tap water has more than enough
phosphates, I was very concerned about the source of this buffering. I
emailed Seachem. They said that the source of the buffering was a carbonate
source and not phosphates. So the skyrocketing pH is understandable. What I
would like to know is: does this buffering last forever? will it dissipate
with time? can rinsing beforehand help? If anyone has experience please share
your knowledge with the list!
Lynn