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post #1 of 5 Old 07-05-2011, 01:58 PM Thread Starter
Ami
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Rocks for tropical fish aquarium

Hi folks,
I want to put in a couple of rocks into my tropical fish aquarium. My local nursery has some rocks like granite etc. I was wondering if I can use the rocks they sell for for fake ponds in my aquarium. Any pointers will be appreciated.
Thanks,
Ami
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post #2 of 5 Old 07-05-2011, 02:07 PM
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Originally Posted by Ami View Post
Hi folks,
I want to put in a couple of rocks into my tropical fish aquarium. My local nursery has some rocks like granite etc. I was wondering if I can use the rocks they sell for for fake ponds in my aquarium. Any pointers will be appreciated.
Been talked about here before...

Many rocks are fine, some, like limestone will of course affect pH. I suspect that granite is not a problem, but am not sure. A good test is to put a bit of white vinegar on the rock, if the acid in the vinegar causes any fizzing on the rock, it's a no go for the aquarium.

The best rocks are rocks from streams, rivers, lakes and such after they have been sufficiently cleaned. These also tend to look the most natural inasmuch as the natural aquascape would attempt to emulate the Amazon (river, not dot com).

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post #3 of 5 Old 07-05-2011, 02:22 PM
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If your looking for small ones, I found the mexican river rocks sold at home depot work well, should be in a bag out in the garden section. My rams have spawned on them twice so far and once you get them wet they look pretty good.
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post #4 of 5 Old 07-05-2011, 03:36 PM Thread Starter
Ami
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Thanks ! I'll use th evinegar test on rocks. Will also go over to Home depot =0) I had visited Campbell Nursery over here. I like the idea of going to local stream beds...that'll be fun =0)
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post #5 of 5 Old 07-05-2011, 07:49 PM
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Thanks ! I'll use th evinegar test on rocks. Will also go over to Home depot =0) I had visited Campbell Nursery over here. I like the idea of going to local stream beds...that'll be fun =0)
To properly do the vinegar test, it's best to chip a piece off the rock and pour the vinegar on the exposed surface. Vinegar is to test for Carbonate rocks like Marble, Limestone and Dolostone for ex. Sometimes you can have a non carbonate rock with lime residue on it ... giving a false reading.

Granite, Slate, Gneiss and Schist are safe aquarium rocks. River stones (rounded) are also a good option and do have a add a nice look to tanks.

I stay away from shale and sandstone.

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