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of calcium and clams (was something about salts)
Hi all
Since my name was dragged into this I though I would
comment as tired as I am (way past my bed time...).
Crushed coral is pretty much calcium carbonate and
magnesium carbonate (with very little phosphates). Shell
grit is the same but has more phosphate.
TO get the Ca and Mg to dissolve the carboante has to be
eaten away by acid (H+). YOu get an equillibrium
similiar to the below:
Ca/MgCO3 2H+ <=> Ca/Mg2+ + 2HCO3-
As not all the Mg/CaCO3 dissolves you end up with a
pretty stable buffer system---which is GOOOOOD.
In bare tanks I will add a slat mix of CaCO3, MgSO4 and
NaHCO3 and bingo presto instant buffer solution.
TO get the Mg levels to that as Lk. Tang you will pretty
much have to saturate the tank with MgCl or sulphate.
The sulphate might be a better idea as the plants will
take it up over time (so will algae...). They will also
take up the phosphates from shell grit. The Pottasium
(K) can be got from KCl or from K2HPO4 or K3PO4 or a mix
there off. This is also a good buffer system but will
deterioate over time as the PO4 is taken up by plants
and ALGAE (Ahg!).
The comments about molar equivilants is very correct.
using mg/l is not a very good way to go about it.
At the end of the day all you really need is a high pH,
stable ph and hardness and good conductivity to make any
Tang. fish haapy. Oh yes, also lots of O2.
Don't worry to much about high Cl concentrations. You
need a very high [Cl] before it becomes dangerous.
If you can send me the data from Brichard's book I can
do the math for you. In fact I would appreciate it any
how.
Bye
Tyrone Genade
tyronegenade at yahoo_com
http://www.tyronegenade.0catch.com
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P450 Lab, Biochemistry Department
University of Stellenbosch, 7602, South Africa
Ph: +27-021-808-5876, fax: +27-021-808-5863
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"No, the LORD has told us what is good. What He requires
of us is this: to do what is just, to show constant love,
and to live in humble fellowship with our GOD."
Micah 6:8
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