Doug I have boxes of rough black slate floor tile, your welcome to some of it if you want.

Steve

Yes but my post was initiated because I have several encrusted a couple inches. I have some of the smaller frags plugs but need grow out encrusting room for the next couple months.

If those are reef safe I may take you up on some.

its natural rough cut slate, I used it in my fresh water tanks for years..

I also have some travatine which is old coral reefs, but I think it is filled so I am not sure what they fill it with. so I don't know if that is good to use.

Steve