Is this Rock safe for aquarium?

[godprint]

hi guys,

sorry for my question in advance.

please advice me if this rock is safe for my tank.

i just picked it out of one of the fuji five lakes this morning... haha...



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[eviltrain]

Use vingear to test if it fizzle.

If its fizzle, its not safe as it may contribute to gh/kh

[godprint]

thanks for the advice!

i better go buy vinegar tonight...

i jus tested using white wine vinegar(for my salad dressing)... nothing happened... and now the rock smells tasty. lol

[marimo]

He means soak the rock or a part in vinegar .. (acidic)
If the rock fizzle in it, most likely is alkaline or contains limestone

Thus putting it in water may affect water parameter.

I will say after the vinegar test, put in the tap water with XYZ parameter and test again 2 weeks later to check if GH has increase..

[godprint]

yes, thanks marimo for advice. i also googled and read.

http://www.ehow.com/how_6570642_make...rium-fish.html