piece together in 3's
If you try to piece an entire rock structure together,you will feel frustration like never before.I have found that by starting with 3 pieces at a time,you can than focus on makeing three to six seperate clusters[try to make each one shaped like a u or close to it.Than you will find yourself with an easy to stack,and already apropriatly spaced rock structure.I have recently found that rivits made of plastic[for attaching fenders,door panals,etc] work better than concrete]And while your at it it pays to put your base rock on half inch pvc legs. This will help in sandbed longgevity and health for years to come and prevent gobie death.But above all take deep breaths and relize you got all day.