Pond Boss Forums AERATION Should I aerate? Water Fountain.. Does it help?

Here is the spec sheet on it.
http://www.macarthurwatergardens.com/little-giant/WG-65%20Spec.htm

Its a little giant wg70 - 1900GPH

Would it be better if I got a different fountain head for it? It has a 3 tier head right now, would a bubbler be better?