joining rocks with rods... what type is good?

[kwirky]

don't know which schedule. just standard pvc piping. For elbows/T's, I used slip connectors, and just drilled a hole through the piping/elbows and slipped a pull tie through. No gluing required.

[hawk]

I used toilet/faucet supply tubes the white not grey. Cost a couple of bucks. They are 1/4" id almost 3/8"od. They have some flex, but are very strong. For very large rocks I used 1/2" cpvc from Cdn Tire.