Planning stages of tearing down my 6 foot 180 and tossing my old phosphate soaked regular rock. After seeing how Greg Carrolls tank turned out with the shelf rock, I am going to go the same route and also use shelf rock. I am the least artistic person known to mankind. i have an awful eye for anything to do with art. Looking for some ideas with those of you that used shelf rock. Hopefully seeing some ideas with it i can start planning on how i want my tank to look.