RE: [APD] adding Calcium Carbonate

["Gilly Munavalli" <gmunava at yahoo_com>]

I've gotten more to go into solution with heat and vigorous stirring
obviously...  but still need large volumes of water to make that happen (3-5
gallons).  I loved having a sump to dump everything into and let it slowly
dissolve without coating everything.  Unfortunately, with the increased CO2
loss and inherent flow instability with the hang on back overflow box
accumulating air in the top of the U tube, I stopped using the sump :-(

I haven't tried supersaturating some water with CO2 from my tank and then
trying to dissolve in the CaCO3...
That would be cool to try 

I eagerly await other suggestions from the group

GM 

-----Original Message-----
From: aquatic-plants-bounces+gmunava=yahoo_com at actwin.com
[mailto:aquatic-plants-bounces+gmunava=yahoo_com at actwin.com] On Behalf Of S.
Hieber
Sent: Wednesday, June 09, 2004 6:04 PM
To: aquatic plants digest
Subject: RE: [APD] adding Calcium Carbonate

Above a certain pH, CalcCarb (CaCo3) tends to precipitate instead of
dissolve. Something over pH 8 as I recall.
anyone rember the value?

Scott H.
--- Sean Kettle <kettles at videotron_ca> wrote:
> What really helps it to dissolve is CO2 injection.  The carbonic acid 
> does a nice job of dissolving the powder.
> 
>

=====
-  -   -   -   -   -   -   -
Cryptocorynes seem cryptic? Worried about meltdowns? Can't tell a C. wendtii
from C. undulata? See 'Crypt'master Jan D. Bastmeijer, host of The Crypt
Pages website, at The 5th AGA Annual Convention. Details/Registration at
www.aquatic-gardeners.org & www.gwapa.org


	
		
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