Thanks and a whoa back at you. The aquascape was done with drilled pvc. The pvc was coneected to the shape I wanted then drilled every two inches and the rock was attached to the pvc using nylon zap straps. This was my first attempt at this method. If you want to see something great check out the link below. Mark (Superfudge) is the guy I first saw do this and his aquascaping IMO is fantastic. http://www.canreef.com/vbulletin/showthread.php?t=31113&page=7&highlight=superfudge