RE: [APD] adding Calcium Carbonate

["Graham Broadbridge" <graham at peachy_org>]

I simply use calcium chloride (available from swimming pool shops as
calcium hardness increaser).  That dissolves easily in water.

Graham.


-----Original Message-----
From: aquatic-plants-bounces+graham=peachy_org at actwin.com
[mailto:aquatic-plants-bounces+graham=peachy_org at actwin.com] On Behalf
Of Gilly Munavalli
Sent: Friday, 11 June 2004 12:31 AM
To: 'aquatic plants digest'
Subject: RE: [APD] adding Calcium Carbonate


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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