Funny you mentioned air stone because we did a different project with it and it was good but by no means compares to the real thing. (domesticimperfection.com)
This medium - sized setup includes net - pot lids, two - inch air stones, and fifty feet of 1/4 - inch air tubing to put it all together. (geekwrapped.com)
Also, the falling water will add a good deal of oxygen to the water, and with the aid of air stones, the flow guarantees good circulation throughout the tank environment. (petbusiness.com)