I had some issues with position of the tubes of the Aquaphonic system. The tube would always move itself diagonal in the aquarium. This is because the tubes are not clamped in the plant basket on top. This improved version clamps itself in during assembly. This is because the tube are thicker, reinforced and watertight without the use glue.

Improvement on this part: https://www.youmagine.com/designs/aquaponic-improvement