Ecoscape Reef Rock: Mix D Box, Fits 40 Gal Tank

Incredibly porous, providing ample surface area for beneficial bacteria.Designed with a realistic appearance to mimic well-established live rock.Hand crafted with natural materials, which is an eco-friendly alternative to live reef rock.Light weight- allows for unique aquascapes.Comes in many shapes and sizes; including caves, arches, plates, and branching pieces.pH neutral- a perfect solution for reef aquariums, reptile enclosures, and cichlid aquariums.