I found this site via google. I plan to post pics later today. I believe the pond is covered in duckweed/watermeal. Bass seem to be prevalent and would surface often because when my parents bought the pond the aerators weren't working.

I believe the pond is covered in duckweed/watermeal and this is an aeration/circulation issue.

I have read duckweed seems to flourish in non moving water.

I have read several articles about homemade aerators and circulators using soaker hoses, sump pumps, and bilge pumps Currently, the pond has only a Kasco surface aerator.

Adding water also adds oxygen so would a soaker hose be sufficient for bottom aeration? My understanding is surface aeration is not enough. Bottom aerators seem to be over a thousand dollars.

I believe the pond is maximum depth of 6 feet and is circular and about 100 feet across either direction.

My understanding is there are 3 ways to remove duckweed: herbicides, biological controls and mechanical controls http://www.schoolofhowto.com/rid-duckweed/ My understanding is herbicide Reward a liquid diquat chemical is good for for chemically killing duckweed but is fairly expensive. Skimming duckweed with a net or boxspring is also been mentioned but will this method totally eradicate it? Any other suggestions with aeration and duck weed removal?

Where do you buy Duquat or reward? How mych is needed for a circular pond that is about 100 ft across plus or minus and 6 feet deep plus or minus?