Large Fountain Clear uses two unique, proprietary technologies to prevent organic contaminants from forming (ie: crusty white scale deposits, iron, copper, hard water stains): one technology helps prevent the buildup of stains and mineral deposits on surfaces; the second uses bio-enzymatic activity to keep water clear and free from the organic debris that can make the water cloudy. Helps to ensure clear, sparkling water, keeping water filters and pumps free from organic debris.