An hour-long special, beginning with a film made by Patrice Benneward and John Costello in cooperation with the Vermont Agency of Environmental Conservation that shows how algae and seaweed are being controlled at several Vermont lakes. Dr. Dan Bean, biology professor from St. Michael's college, is interviewed as he and his students perform simple tests for pollution on Lake Woodbury's waters. John Clerkin, Town Manager of Castleton, and Jim Leamy, president of the Lake Bomossen Association, show how the town keeps Lake Bomoseen clear with its paddle-wheeled weed harvester. Renee Monette demonstrates a simpler device he uses with a motorboat to clear northern Vermont's Lake Parker. Following the film, viewers were invited to call ETV with their questions and comments. In the studio to answer questions and discuss the film will be Clerkin; Allan Cassell, director of the Water Resources Research Center at the University of Vermont; and James Morse, Chief Aquatic Biologist for the Vermont Department of Water Resources.