Unique Rocks Found, Searching Best Practices - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 07-11-2013, 11:01 PM Thread Starter
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Question Unique Rocks Found, Searching Best Practices

I'm starting up a Mr. Aqua 12G Long (freshwater, cherry shrimp-centric) with fine-grade Eco-Complete and have started looking around my local area for rocks (momentarily suppressing my online-buying habits).

As I begin down this path I'm curious if anyone might be familiar with this type of rock shown below, and what I might opt to carry around with me other than vinegar to test rocks that I have interest in before purchasing them (or dragging them back home).








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post #2 of 5 (permalink) Old 07-11-2013, 11:05 PM
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I have found all my rocks on a hillside near my house, it's at the edge of a residential area, and found a few piles of non local looking rocks I suppose dumped from torn out landscaping projects. I tested everything with muriatic acid from the hardware store. I use chemical gloves and should probably also wear eye protection.

Last edited by thesawguy; 07-11-2013 at 11:07 PM. Reason: .
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post #3 of 5 (permalink) Old 07-11-2013, 11:10 PM
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I wonder if that red represents iron or other metal/mineral and if it could negatively impact your water parameters. Who knows, it might make your red plants be SUPER red.
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post #4 of 5 (permalink) Old 07-11-2013, 11:16 PM Thread Starter
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@thesawguy - Great suggestion. Do you use a certain % solution?

@thelub - I'm actually pretty concerned with heavy metals because of the coloration in these. Would hate for it to be full of dissolved copper or something.

Outside of submersing the rock in a bucket and checking the water params with the API tests I've got, is there a better way to check for such impact?
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post #5 of 5 (permalink) Old 07-11-2013, 11:18 PM
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IIRC copper will be greenish blue if its present. That would likely be iron if anything. It shouldn't be hard to google the local mineralogy composition and see if there's anything potentially harmful.
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