No, its not volcanic!DirtyBlackSocks said:I would imagine - based around what I've read about Lake Tang - that most of the rock found in it is volcanic, though it's probably been smoothed quite a bit over the years by water currents.
They are basicly collection basins where the sliding techtonic plates left depressions.The East African Rift came into being approximately 40 million years ago as the African tectonic plate began to split. Lakes such as Lake Malawi and Lake Tanganyika have formed in the various valleys of the rift zone, including the huge Lake Victoria.
I prefer rocks that sink . It all boils down to what you think looks good. I'm probably going to try to find something like lace rock, just because my tank is smallish (29 gallons) and I think it takes more space to get the right "look" with a smoother rock.Fishbguy said:What kind of rock do all you use in your tanks? I'm trying to decide between lace rock and river rock.
What does everyone else use?
Bigger-than-will-fit-in-my-tank rocksMatt54 said:Pics from the lake:
http://www.tanganjikazucht.de/pics/reis ... amaswa.jpg
http://www.tanganjikazucht.de/pics/reis ... imaswa.jpg
so what type of rock is in the picture ???