bigharge,
How big is your pond? If it's like an acre or so I have even hooked up a trolling motor and put it on high to circulate the water some. Right now it would seem you need anything. As said above if you have a small 10 hp motor or something put it in there and stir that water up. It may help enough till your system gets there? If that's what you problem is???
Good Luck
RC