Remove unwanted algae efficiently with Alpine Corporation's 40-Watt UV Clarifier. This ultra violet water clarifier kills suspended algae with UV light. As water passes through, the rays of an ultra-violet lamp (located inside each unit) eliminates green water by making the algae clump together so it can be removed by pond filters. Pair with one of our filters to get your pond looking fresh and clean.  Measures 36 in. L x 6 in. W x 5 in. H for out of water use.Alpine's award winning in-house design team continuously develops new and innovative "statements pieces" for your home and garden. Your outdoor living spaces will be the envy of the neighborhood with our wide assortment of fresh, fashionable and contemporary products, from beautifully crafted solar garden stakes featuring patented motion and fiber optic lighting technology to gorgeous glass and glow-in-the-dark birdbaths and feeders.