ID this rock please.
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Old 02-01-2009, 08:45 PM   #1
lizziotti
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ID this rock please.


I love the look of these rocks are these manten? Where can I found cheap rocks like these? Thanks for any help.
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Old 02-01-2009, 09:07 PM   #2
metageologist
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its hard to tell from the picute but they lood like weathered sand stone or possibly limestones

you could probly find these at a local landscaping company or along any creeks near you or possibly you could find them along the niagra river.
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Old 02-03-2009, 07:57 PM   #3
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Originally Posted by metageologist View Post
its hard to tell from the picute but they lood like weathered sand stone or possibly limestones

you could probly find these at a local landscaping company or along any creeks near you or possibly you could find them along the niagra river.
Oh that's a great idea! I just wonder how safe they'd be.
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Old 02-04-2009, 12:40 AM   #4
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I believe that sandstone is usually perfectly safe, it's just cemented sand and would be no different than putting sand in your tank. Due to the nature of sandstone I suppose that some other nasty particles could mix with the silica dioxide, sand, when the rock is forming, though I think this is a fairly low proabibility, since the minerals that form sandstone would be well whethered and usually only the most stable minerals survive, namely the sand.

However I don't think that limestone would be a good addition to the tank, it is Calcium carbonate, CaCO3, and that would rise your carbonate hardness or KH. A way to test for limestone, or it's metamorphic rock cousin marble, is with a solution of HCl, Hydrochloric Acid. If you have an API test kit API Nitrate test bottle #1 is a HCl solution. Put a drop on the rock, if it fizzes it means that it has CO3 in in and probably shouldn't be put in the tank.
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Old 02-06-2009, 01:19 PM   #5
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Originally Posted by tominator View Post

A way to test for limestone, or it's metamorphic rock cousin marble, is with a solution of HCl, Hydrochloric Acid. If you have an API test kit API Nitrate test bottle #1 is a HCl solution. Put a drop on the rock, if it fizzes it means that it has CO3 in in and probably shouldn't be put in the tank.
Oh thats great to know thanks!
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