Originally Posted by packfan2204
i'm interested to know too, cause i have read that a seperate air supply was important.
Adding a supply of bubbles does very little in a SW
tank. The gas exchange that occurs is at the waters surface so anything that causes a disruption in the surface tension of the water causes the O2
's will be the best source for this as they move the entire surface of the water more efficiently and without the mess an airstone will create with potential saltcreep.
The airstones are inefficient because of the small area they impact at the surface area. The actual bubbles going into the water do little to nothing...