You can add spot treat ponds with copper-based aquatic herbicides, called algicides, to control algae growth. You can also use non-chemical alternatives, including adding aquatic dyes or a fish species called grass carp.
About this Author
D.M. Cameron was a journalist and editor for wire services, newspapers and magazines for more than 20 years. In addition to editing and ghost-writing non-fiction books, Cameron now writes for several websites and trade journals. Cameron's degrees include a Bachelor of Arts in journalism from Penn State.