What type of rock is this??

[Shell_Dweller]

Hi as the title mentions, at 50 seconds?

Thanks

Malawi & Tanganyika aquariums - YouTube

 

[rotorhead22]

Hi as the title mentions, at 50 seconds?

Thanks

Malawi & Tanganyika aquariums - YouTube

That rock is Basalt(black) and Scoria (red), which are both igneous rocks (from volcanoes).

 

[Shell_Dweller]

Thanks.

Will it raise the PH like Ocean rock does?

 

[rotorhead22]

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.

 

[Shell_Dweller]

Thanks

 

[FishontheRock]

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.