Would you mind me asking what the cost of that large corrugated pipe was.....my guess is it was expensive. I just made a 5' X 5' prototype "Georgia Cube" (Google it for pics, instructions, etc.)using 1 inch PVC and it took an entire 100 foot spool of 4 inch corrugated drain pipe to "fill it in" so to speak....that translated to about $60 worth of materials (PVC, drain pipe, glue, galvanized screws)....that is too expensive IMO.
I think I can build 5' X 3' cubes for around $38/$39 each all in...of course you get more efficient the more of these types of things you build. Trying to reduce costs is a focus since I need at least 15 of these PVC structures.
