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Re: [APD] Calcium Nitrate


Here are solubilities I looked up in the CRC Handbook of Chemistry and 

Calcium Nitrate Ca(NO3)2   121.2 gm/100 cc H2O @ 18 C

Calcium Nitrate, tetrahydrate  Ca(NO3)2-4H2O   266 gm/100 cc H2O @ 0C

Calcium Nitrate, trihydrate  Ca(NO3)2-3H2O   Insoluble in water

Calcium Carbonate  CaCO3   0.0014 gm/100 cc @ 25 C

Calcium Carbonate, hexahydrate   CaCO3-6H2O  Insoluble in water

I haven't used calcium nitrate in my tanks but I have used it to mix up 
fertilizer for my cactus. As the solubilities show above it will be orders 
of magnitude more soluble than carbonate.

Jerry Smith, Bloomingdale, NJ

>Date: Mon, 17 Jul 2006 11:47:14 -0400
>From: "Kettle, Sean" <skettle at snclavalinprofac_com>
>Subject: [APD] Calcium Nitrate

>Has anyone used calcium nitrate in their tanks?  Does it dissolve
>quickly or will it essentially be six of one, half a dozen of the other
>compared to dissolving CaCO3?

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