Aqua Ultraviolet 15 Watt Classic UV Sterilizer - Black BodyAqua Ultraviolet UV Sterilizers will eradicate algae, bacteria, and protozoa without any harmful chemicals or additives! UV lamps emit a wavelength that will alter and disrupt the DNA or RNA of single celled organisms. Combining the UV lamp into a large housing allows for maximum contact time with the lamp allowing the sterilizer to be much more efficient. By changing the flow rates through the body of the UV sterilizer lets you target the specific