This is a custom made Acrylic/Fiberglass reef that was professionally made outside Boston, MA by a company that creates large tank systems. It is shown in my 110 gallon tank. (ONLY REEF IS FOR SALE) Collection is 3 Pieces. When I had this made it cost $100 per gallon $11,000. Process was molding pieces from actual pieces of coral, then fiberglassing, applying acrylic and hand painting. Took 60 man hours to make. Signed by creator. Requires at least a 30 inch height tank (NOTE: Cash only in person)