How to Add Oxygen to a Fish Tank
At a Glance Oxygen enters at the water surface, so the fix is to churn it. Point the filter outlet at the surface or add an air stone or sponge … Read more
What Does an Airstone Do? (and Bubbles Explained)
At a Glance An airstone turns air from a pump into bubbles that churn the water. That churn helps oxygen dissolve in and carbon dioxide escape, and it moves water … Read more