The Planted Tank Forum - View Single Post - Are these rocks safe for a planted tank?
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Old 02-09-2013, 02:10 AM   #18
Farmer
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Location: NE Victoria, Ausrtalia
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Quote:
Originally Posted by MSG View Post
I'm pretty sure loch is right. It's a type of gneiss. Granite doesn't have a glittery type surface like that.
Actually it can. depends on how much mica it has in it. Mica is the glittery part in granite.

Quote:
Anyway, not to hijack, but what do you all think these rocks are? I'm most interested in the BROWN rusty rock. The person I got that one from was a aquascaper.
I'm not sure what you call it but it looks very similar to a rock we quarry on my property. Can't help you with a name but it looks rich in iron. Same with the red soil here.

Some of them (the flat ones) look a lot like slate.

Quote:
First row of rocks matches the OP's.
Linds
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