Thanks, the rockwork consists of only 5 pieces approx 25lbs each which are marshall island and full of tunnels so there is lots of room for fish and critters to hide out.
Ahhh those clams, the crocea is the one in my avtar I got that one about a year ago, the derasa I bought on ebay for 90 cents......shipping was $30 though. It arrived and was 2 inches in length.....he has grown 8 inches in a year and should get to about 18 inches in total.