UV-C sterilizer for garden ponds and aquariums (seawater or freshwater). It eliminates green algae suspended in the water and bacteria responsible for cloudy water, and protects your fish from pathogenic bacteria. It makes water crystal-clear without chemicals. The assortment includes a high-productivity, long-life UV-C lamp, automatic preventive shut-off when the lamp is replaced, and a secure closure. The filter body is shockproof, waterproof and resistant to exposure to sunlight and bad weather. It can be used as a stand-alone unit, as well as with PREXO adv, PURO adv and PRATICO adv filters from the NEWA POND filter line.