The wife's 10 gallon (update 7/29)

[aquariumd]

Nice looking rockwork. Is some of that sweet rock lime-stone covered in purple coralline?

[Janus]

yep it is indeed limestone. When we started we wanted to have an engineer in the tank so we knew that we would need a nice flat base piece for it to dig under. We have a few shelf pieces of reef bone but the limestone made more sense due to the holes it has through it. Now he has a million little holes to dart into.