Sea Shells

Can anyone tell me what the benefit of adding sea shells to your tank would be? I read in another post that someone had
added them, in order to improve something, I believe. So, I was wondering if someone could explain to me what good it
would do to have them in your tank? Also, are their any cons with adding them?

i add them to my tanks where i have shell dewellers in there. that are a small african cichlid from lake tang.

Oh, Ok. Thanks Holey! I don't think I have any of those.

i heard you can add them but they have to be cleaned up real good, i never wanted to take the risk but they sure look nice on your fw tank..

They also help add calcium and will raise ph. Very similiar to crushed corals