Re: was APD V3#1063 & Calcium Deficiency

["Tom Brennan" <brennans at ix_netcom.com>]

George wrote........
 Mon, 31 May 1999 16:12:40 +0000
From: George Slusarczuk <yurko at warwick_net>
Subject: Re: Aquatic Plants Digest V3 #1063

Hello Ken,

Calcium chloride works well, but will acidify your water.

Marble chips (used in landscaping) in the filter will keep calcium
carbonate at saturation level.

Dolomite (sometimes used as gardening lime) will also add magnesium to
the water. Magnesium is needed for chlorophyll formation.

Best,
George
============================================================

George/All....

What is saturation level?  Is this the point where Ca precipitates out of
solution.  Also I have used "Sweet 'N Grow " Bakers Dolomite - Hy Magnesium,
Pulverized Lime Stone

Chemical Analysis:
                                                       Minimum Percent
Calcium Carbonate (CaCO3)......................53.5%
Calcium Oxide (CaO)...............................30.0%
Magnesium Carbonate (MgCO3).................42.0%
Magnesium Oxide (MgO)..........................20.0
Elemental Magnesium (Mg)........................12.1%
Elemental Calcium (Ca)............................21.4%
Calcium Carbonate Equivalent (C.C.E.).....105.6%

and noticed it takes quite some time for the gH/kH to rise maybe days.  I
thought by injecting Co2 it would devolve faster or almost immediately.  The
Bakers Dolomite is a very fine powered and seems to dissolve upon slight
mixing?  Is this what I want to use or should I seek out CaCO3 for kH/gH and
use baking soda for increasing kH/gH.  By now you should have guess I am not
a chemist!

Tom Brennan

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