Tropical Fish Keeping - Aquarium fish care and resources

Tropical Fish Keeping - Aquarium fish care and resources (
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-   -   Help with these rocks?? (

aaronjunited 02-13-2011 01:01 PM

Help with these rocks??
I have some pictures here, i collected this lot from the beach. No idea wat so ever what any of them are, hopefully someone can help.

rock 1

rock 2

rock 3

rock 4

rock 5

rock 6

rock 7

rock 8

different view of rock 8

rock 9 - looks like slate??

rock 10

Please can someone identify if these may be safe in an aquarium, and what they are.

Christople 02-13-2011 01:07 PM

A way to tell is to pour vinegar on the rocks and if it foams it will change your water chemistry

aaronjunited 02-13-2011 02:01 PM

Yea i will be doing that, just want to know if anyone knows what they are?

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