Water pump driven by air
thingiverse
This pump allows you to utilize your air pump for two purposes, reducing energy usage in the process. Air is dispersed throughout the water, facilitating absorption by the surrounding liquid, while the upward-bound air pressure also serves as a mechanism for pumping water. To accommodate this system, the air pump can be connected via a 4mm inner diameter hose. Instructions Note that you must find a way to secure the pump underwater; if not, it will inevitably float due to buoyancy.
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