I also do the drilling method but I use acrylic rods from regal plastics.
Notice the rock hanging over the buddha's head, it's comprised of 6 rocks all connected together with rods.
http://www.killbuddha.com/images/ree...llDSCN8399.jpg
Please disregard the algae, that's my old tank and I solved my algae problem by eliminated the source (vs finding something to eat it)



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