Crystal-Clear Water with High-Efficiency Aquarium UV Sterilizers Combat algae blooms, harmful bacteria, and parasites with our high-quality UV sterilizers. Ideal for both freshwater and saltwater aquariums, these units use ultraviolet light to disinfect water and improve clarity without the use of chemicals. My Aquarium Direct offers UV sterilizers that are easy to install, low-maintenance, and highly effective for tanks of all sizes. A great addition to any filtration system for promoting healthier aquatic environments.