The Planted Tank Forum - View Single Post - Is this ok to use in place of dolomite?
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post #3 of (permalink) Old 02-05-2013, 03:29 AM
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I'm sure one of the MTS folk will give a better answer...

I imagine you could use it, but it looks like it's pretty lacking in the Magnesium (Dolomite is a mix of Magnesium carbonate and Calcium carbonate). I think that the presence of Magnesium is why a lot of people use dolomite, as opposed to just Calcium carbonate limestone/aragonite

Maybe you can use something else to add magnesium to the mix...
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