Live rock question

[Octoberfest]

A friend of mine just moved up from Tampa Bay, FL. He is into collecting fossils. He was looking at a construction site and found huge pieces of fossilized coral. He told me he doesn't want them anymore and asked if I could use them in my tank?

Any ideas on if this is possible?

 

[Gtstricky]

Could work. Does it look like live rock?

 

[crvz]

what's the rock made up from? it's probably limestone, no?

 

[Octoberfest]

Here are some pictures

 

[crvz]

probably ok, but it seems pretty dense. If you're hoping to use it for live rock, usually more porous rock is recommended.

 

[Octoberfest]

Well to be honest its almost like a sponge. The holes are very tiny almost to the point you can't see them, but if you put it in water it soaks up the water.

I don't need it in my tank but may hold onto it for another tank in the future.

 

[fish outa wata]

definitely looks like coral skeletons but like crvz said appears to be very dense

 

[WLachnit]

Looks a lot like what one of my LFS sells as "base rock". Looks limestone based.