Clarion Marine is a technologically advanced, premium quality, maximum strength clarifier that immediately and safely begins flocculate dirt, bacteria, parasites, and other debris or cloudiness causing particles into clumps that can easily be removed by a good mechanical filter with fine filter floss. It is not an algaecide. It is a high tech, long chain polymer that is safe for sensitive invertebrates and marine fish. Contains no aluminum, silicates, phosphates or nitrates. 100% biodegradable.