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Old 07-05-2012, 01:11 AM   #1
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What type of rock is this??

Hi as the title mentions, at 50 seconds?

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Malawi & Tanganyika aquariums - YouTube
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Old 07-05-2012, 01:16 AM   #2
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Quote:
Originally Posted by Shell_Dweller
Hi as the title mentions, at 50 seconds?

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Malawi & Tanganyika aquariums - YouTube
That rock is Basalt(black) and Scoria (red), which are both igneous rocks (from volcanoes).
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Old 07-05-2012, 02:00 AM   #3
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Thanks.

Will it raise the PH like Ocean rock does?
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Old 07-05-2012, 10:43 AM   #4
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These rock will not raise your pH. To get pH of 8.2 -8.4 you will need to use limestone. The white rock in the second tank is Texas Holey Rock (limestone) which is used for African Rift Lake aquaria. It gives fish lots of hiding spots.
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Old 07-05-2012, 04:16 PM   #5
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Old 07-05-2012, 05:13 PM   #6
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If there are little green crystals in a basalt I would be Leary if using it in an aquarium. The crystals are olivine and oxidise quickly. A olivine basalt may not be very strong after the olivines weather out.
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