First off here is a thread with the background and current state of my pond. Need to update it but currently 4.5-5 foot low on water but coming up steadily with the spring rains.
http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Main=30089&Number=390173#Post390173I am wanting to put an aerator in to keep the water open in the winter and to help eliminate stratisification during the hot summer months.
Picture from thread above to show aerial photo of the pond before all the work done last fall.

So I am thinking possibly a 2 defuser setup with one in the deepest portion of the pond 14-16' (approx. the top end of the bold yellow line) and a second one off the end of the point between the two fingers in about 6 to 7' feet of water. I can locate the pump at the back shed or at ponds edge very easily and power is readily available at the sheds. My only concern is the noise level that would be associated with it being mounted inside my building. I have an idea of what this might cost to do with a turn key system but I havent been able to find/figure out what I would need to look for in a DIY system.
Appreciate any help and suggestions