Duckponics. 3,000 gal DIY Backyard Aquaponics System. Growing organic duckweed on floating raft for aquaponics in same pond or tank as your tilapia. Pond Aquaponics. Moving Bed Biofilter & ap update 14th March 2014. New radial flow filter for aquaponic system.. How to Build a Dome. 42 foot greenhouse dome. Geodesic Dome & Aquaponics. Growing spaces geodesic grow dome greenhouse being built stop motion. Geodesic Dome Greenhouse - Part 9 - Polycarbonate! Geodesic Dome Greenhouse - Part 8 - ASSEMBLING THE DOME! GRAND TOUR - Aquaponic Geodesic Dome Greenhouse. The Better Bell Siphon. How To Build a Bell Siphon. Best bell siphon ever explained.