Ideas needed - Tanks with pipe scapes

[leslie hempel]

Hey all.
Please can you post some pictures of tanks with pipe scapes concealed in synthetic rock, I am needing inspiration for a build.
Help will be greatly appreciated!
Thank you in advance.

 

[Paul B]

When the hobby started in the early 70s I collected all my rock using SCUBA. Since then, I replaced most of my rock with cement encrusted PVC pipes as I like it better and whats better is it's hollow.