[GSAS-Member] Cuttlebone

[florin cracut <florincracut@yahoo.com>]

As Shamus said cuttlebone(cuttlefish bone) is the natural way to add CaCO3 in 
your tank. I add small pieces in my tank and these are exhausted I add some 
more. In Seattle area we have soft water and I try to raise GH and KH to 6. 
Using CaCo3 you will raise both KH and GH. To raise GH you can use also CaCl2, 
epsom salt and for KH baking soda.
I think these is a very interesting article about shrimps:
http://www.petshrimp.com/articles/whyshrimpdead.html
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