Rocks being aquarium safe - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 04-12-2013, 01:41 AM Thread Starter
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Rocks being aquarium safe

I understand the acid test but if I do not have any acid and do not want to spend the money is there any way to identify the type of rock and determine if its save besides the acid? I found them at the edges of a pond but submersed so it makes me think they should be safe.

I can take a cell phone picture if it will help.
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post #2 of 10 (permalink) Old 04-12-2013, 02:44 AM
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A picture would be of some help.

Just because you found the rocks in a pond (or by the edge of a pond) does not mean that they will be safe for the aquarium. Not only do you have to worry about parasites and other unwanted hitch hikers, you may find that the rock alters your water chemistry.

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post #3 of 10 (permalink) Old 04-12-2013, 02:55 AM
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Re: Rocks being aquarium safe

I'd start by boiling it to kill parasites and diseases, then run a bit of vinegar over it. Vinegar is a lot weaker, but can tell you more than knowing nothing.

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post #4 of 10 (permalink) Old 04-12-2013, 06:24 AM
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If you have a nitrate test you can use solution#1 to test rocks, it is an acid that will react with rocks that raise hardness. Some of the fancy scaping rocks raise hardness, do water changes and all will be fine.
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post #5 of 10 (permalink) Old 04-12-2013, 06:35 AM
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You can also go to your nearest cabinet store and ask for their granite scraps, I got a 5 gallon bucket full for free, just chip the finished edges for a nice rugged look.
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post #6 of 10 (permalink) Old 04-18-2013, 09:29 PM Thread Starter
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sorry for the delay. Vinegar did nothing and here is the best picture i could get.

the veins look almost pinkish with the rest being more of a gray.
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post #7 of 10 (permalink) Old 04-21-2013, 06:19 PM Thread Starter
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I know the picture sucks but any ideas on if it would be safe? it passed the vinegar test.
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post #8 of 10 (permalink) Old 05-24-2013, 09:06 AM
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You could always put it in a bucket of water and test the water before and after its been sitting for a few days.
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post #9 of 10 (permalink) Old 05-24-2013, 09:35 AM
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Re: Rocks being aquarium safe

What are you suppose to see when putting acid on the rocks?

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post #10 of 10 (permalink) Old 05-24-2013, 09:41 AM
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If you see bubbling, foam, then the rock has carbonates which could change your water. Vinegar doesn't always work, try scratching the rock with a knife, if you can't scratch it then it is probably not a carbonate rock. If you can scratch it, try the vinegar on the powder from the scratching, that is a more sensitive test. Or use the nitrate solution mentioned above.
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