"Boomer" <wcwing@nospamchartermi.net> wrote in message
news:WkR0f.8540$Yv6.6619@fe06.lga...
Why don't you go back to your last nonsense post here to me months ago.

Even known ref mean nothing to your short brain.
Is this English?


You should really learn to troll better. You are about as good as it as you
are on chem issues.
Your knowledge of chemistry is almost as good as your spelling and grammar.

The only one that needs to type slower is me, for you, I proved last time
and that did not work either, so try to get out of the fog bank
you live in.
The only thing you proved last time was how little chemistry you understood.

"It (aragonite) either helps to : maintain pH or it doesn't. You can't
have it both ways."

Sorry yes you can, as all aragonite is not the same. Go get a book on
carbonate aquatic
geochemistry. Puka sand , oyster sand, oolitic sand and coral sand are all
aragonite but
the solution kinetics is not all the same.
Wrong. Puka sand, oolitic sand
(http://geology.utah.gov/utahgeo/rock...ng/oolitic.htm) and
coral sand are all composed of CaCO3, but they are all NOT ARAGONITE. Coral
sand and oolitic sand might possibly contain aragonite, but they are not by
definition aragonite. Aragonite is a specific type of mineral. You need
to get a clue.

http://mineral.galleries.com/mineral...t/aragonit.htm


Some may initially raise the pH and some may cause a drop in pH. Puka is
the best an trying to maintain initial pH. It does not make
much difference what they do, for the amount of increase or decrease is
small and all will
cease in time due to organic coatings and bacteria films.
Under controlled lab test conditions all aragonitic sands will cause a
drop in pH due to the precip of Mg-Calcites.
Some only a few hundredths of a pH, others almost .5 pH. Even different
salt brands give
different results.

Running life form aquariums are not controlled. Some reefers have 4 x
the amount of CO2 and some SB are more acid producing than others,
depending on the load.
Even baking soda which has a pH of over 8 causes a drop in initial pH.
Baking soda does NOT have a pH. A solution of water and specific amount of
baking soda will have a specific pH. If I put 2 mg of baking soda into my
bathtub filled with water (pH = 7), is the pH going to be 8 after the
addition? Nope.

I am going to have to start charging you.

" I'm not sure you know what calcite is at this point"

Well, it is obvious you are clueless. I guess your lack of though process
never got you to
think hmm Goggle " Hi-Magnesium Calcite", Low-Magnesium Calcite, Calcite.
Lets go further
just for you, Magnesite, Dolomite, etc.
You are not making sense.

It's difficult to debate you. Please try and maintain some degree of
coherency.

I see you are still confused on "buffering capacity" so it seems hopeless
for you. Please
go to library and seek out a aquatic chem book.
No need.

[quote]If your pH dropped from 8.2 to 7.8 the buffering capacity INCREASES as you
are approaching its pKa