Diffuser Hose Hook

Attach a hose to the hook and have an air diffuser in your aquarium.

One connector is for a hose with an inner diameter of 12mm. The other one can be used for a hose with an inner diameter of 9mm up to 12mm.

If you need other inner diameter, just pick one and scale the print, e.g. 133% to scale 12mm to 16mm (16/12*100)

You may need to add support on the outside to print this.

Be aware that most printers do not print in a waterproof manner. You may need to apply epoxy/synthetic resin paint/varnish to prevent leakage.