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Old 12-07-2013, 07:25 AM   #1
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Whats up with my rock?

I've has these river rocks in several tanks in the past.. Recently that have like rust on them.. I removed,, just wondering what causes this
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Old 12-07-2013, 08:46 AM   #2
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Decorative Rocks in Tanks

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Originally Posted by TheOscar View Post
I've has these river rocks in several tanks in the past.. Recently that have like rust on them.. I removed,, just wondering what causes this
Hello The...

I use the vinegar test on the rocks I put into my tanks. This one may not be safe to use. Let the piece dry. Then, put a few drops of vinegar on it. If there's a reaction of any kind, then don't use it. If there's no change, then rinse it well and if you want, put it back into the tank.

B
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Old 12-07-2013, 09:09 AM   #3
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Ok, will do. I'm assuming some rocks have higher metallic properties ? I'm really loving pulling from nature , I know it's risky , but there's something about using natural decor you've found.. Anyway.. Thanks for your help
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Old 12-07-2013, 09:20 AM   #4
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Is it magnetic (eg with a kitchen magnet) or heavy for its size?
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Old 12-07-2013, 09:38 AM   #5
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Nope, feels like all the others.. They all came from the same place
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Old 12-07-2013, 09:51 AM   #6
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If there was a lot of iron I would expect it to feel quite heavy. If it was metallic or magnetic this would be the case.

Hmm, I had wondered if it was iron rich and this was rusting out - is it only on the darker rocks? These would be more likely to be iron-rich.
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Old 12-07-2013, 09:57 AM   #7
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Actually it is in the darker ones.. I'm just going to toss them and find more.. Kind of silly to take a chance over some rocks .. Thanks
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Old 12-07-2013, 10:07 AM   #8
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Makes sense - never short of rocks
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