RO/DI
Professional-grade water purification for pristine aquarium water. Waterbox RO/DI Units are engineered to deliver the purest water possible for your aquarium—ensuring the ideal foundation for reef and freshwater systems alike. Available in both 4-stage and 5-stage configurations, each system features a 100-gallon-per-day membrane and premium filtration components designed for long-lasting performance and exceptional purity. The 4-stage unit includes a sediment cartridge, carbon block, RO membrane, and DI resin to achieve zero TDS (total dissolved solids). The 5-stage unit adds an additional DI resin cartridge for extended filter life—perfect for aquarists who produce large volumes of water or demand maximum efficiency. How It Works:Water first enters the sediment cartridge, which removes particulates such as dirt and debris, extending the lifespan of the following filters.Next, the carbon block removes chlorine, chloramines, and discoloration, protecting both your aquarium and the RO m