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Pond scum, or blue-green algae, is a common sight in the land of 10,000 Lakes.
A start-up company in Minnesota aims to prevent the algae blooms using a sustainable solution rather than a chemical solution. They have found success by placing bales of pelletized barley into ponds in the spring and then harvest the weeds in the summer to allow beneficial plants to continue growing.
This method has been around for thousands of years, but has received a wide following in the past few years as a more environmentally stable means of algae control.
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