Earth-Friendly Products for Birdbaths and Fountains. Microbe-Lift Large Fountain Clear, for larger water fountains and indoor and outdoor waterfalls. Prevent organic contaminates from forming (i.e. crusty white scale deposits, iron, copper, hard water stains) using two unique technologies; one helps prevent the buildup of stains, mineral deposits and scum on the birdbath or fountain surface; the second uses bio-enzymatic activity to keep water clear and free from the organic debris that can make water cloudy.