Battery Acid ok to test rock with? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 07-25-2006, 01:00 AM Thread Starter
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Battery Acid ok to test rock with?

I have some Sulfuric Acid (aka battery Acid) here at the house and have collected some local rock I would like to test. I read in rexx's guide to use muriatic acid, but have had trouble finding it. Anyone know if sulfuric acid works?
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post #2 of 9 (permalink) Old 07-25-2006, 01:18 AM
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Battery acid will work just fine.
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post #3 of 9 (permalink) Old 07-25-2006, 02:14 AM
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If your curious, you can find Muriatic acid at HomeDepot in the pool section...


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post #4 of 9 (permalink) Old 07-25-2006, 02:48 AM Thread Starter
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ok, I gave it a shot with the sulfuric acid and nothing happened. I'm almost certain this is limestone, anything I can do a control test on? I have a reef tank and several dried out reef rocks I can use maybe.
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post #5 of 9 (permalink) Old 07-25-2006, 05:39 AM
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The trick is diluting the sulfuric acid a little, say 10-100 times, concentrated sulfuric acid reacts slowly with CaCO3 but once diluted it'll react faster. Don't pour water into concentrated acid, add acid to water for safety purposes.
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post #6 of 9 (permalink) Old 07-25-2006, 11:30 AM
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Quote:
Originally Posted by yznj99
The trick is diluting the sulfuric acid a little, say 10-100 times, concentrated sulfuric acid reacts slowly with CaCO3 but once diluted it'll react faster. Don't pour water into concentrated acid, add acid to water for safety purposes.
Stir while doing so as to get rid of excess heat. Nothing worse than shattering glass while diluting acids.
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post #7 of 9 (permalink) Old 07-25-2006, 12:22 PM
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If you happen to have a broken bit of concrete (especially a concrete paver brick, don't ask me how I know this!) around it reacts pretty strongly with acid.

Sláinte!
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post #8 of 9 (permalink) Old 07-25-2006, 08:50 PM
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If you think its limestone- lime or lemon juice will tell you

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post #9 of 9 (permalink) Old 07-26-2006, 01:29 AM
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Quote:
Originally Posted by Aquaseafoam
If you think its limestone- lime or lemon juice will tell you
Not always and not quickly.
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