Our top picks for clearing string algae in your pond are "Pond Balance" for clearing up string algae in the pond and "Laguna Pond Clean Granules" for clearing up the algae in and around your streams and waterfalls. Alternatively the Atlantic Triton Ionizer is highly effective for keeping the pond as well as streams and waterfalls free of attached algae.
ALL products we sell are highly effective and are completely safe for pond fish and plants when used as directed.