Anti Algae Treatment. eSHa Protolon-707 will eliminate all algae in your aquarium. Unlike other treatments, it does not harm aquarium plants (it actually helps them grow!) and is safe for fish and filters. Protolon-707 is effective against filamentous algae, beard algae, slime algae, blue green and brown algae, suspended algae and thousands of other species. Treats 300 litres (66 gallons).