Aquarium algae control and aquarium algae removal are very complex problems that need to be battled on many fronts. For a comprehensive solution to your algae problem we recommend reading "Algae: A Problem Solvers Guide"
Not listed in this section, but critical components are UV Sterilizers, Phosphate Reactors, Refugiums and RO Systems.
UV Sterilizers prevent free floating algae from reproducing.
RO Systems use reverse osmosis to produce purified water without phosphates and other substances that encourage algae growth.
Refugiums cultivate algae outside of the main tank, resulting in the consumption of algae nutrients.
Phosphate Reactors remove phosphate.