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#1
07-07-2003, 02:31 PM
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Can crushed oyster shell be used as a substrate?
I was wondering if it would be a viable substrate.
It is pure oyster shell that is crushed. No other additives. I saw it at a store selling farmer stuff. They would use it to mix into the soil to raise calcium level. So... Why not in a salt water aquarium? Thanks Michael 
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