"Living Fossils" in Our Reef Tanks

[claymax]

I think cyano is something like 3 billion years old, makes sense as to why it's so tough to get rid of!

[Jeontai]

Horseshoe crabs. Creepy things... 450Million years old or so?

[mrhasan]

Originally Posted by claymax

I think cyano is something like 3 billion years old, makes sense as to why it's so tough to get rid of!

Cyano is as old as the earth itself :P I think it started its journey when the earth became a "live-able" planet (as far I can remember reading it somewhere).