The UltraLife Wall Mount 4-Stage Reverse Osmosis & Deionizer produces excellent water quality for your aquarium. This unit is known as the Pollution Solution, where water runs through a 4-stage filtration system containing 1 micron pre-filter, 5 micron solid carbon blocks and thin film composite membranes that work together with the Deionizer. The deionizer demonstrates an ion-exchange process which utilizes a scientific grade mixed-bed anion and cation resin in a 1 to 1 ratio; thus, successfully removing ions and other bacteria, pollutants and toxins from your aquarium water. This heavy-duty RO Unit features a secure Wall Mount bracket and is created larger than the portable RO Units for durability and optimal performance. The Wall Mount 4-Stage Reverse Osmosis & Deionizer is the first step to a successful aquarium environment, as it provides all living organisms with a toxin-free atmosphere for proper development and sustainability.