The Bulk Reef Supply 4 Stage Value RO/DI System is an essential piece of equipment for any serious aquarium hobbyist, designed to produce up to 100 gallons per day of ultra-pure, 0 TDS water. This purification process is critical for creating a stable and healthy environment in both saltwater reef tanks and sensitive freshwater aquariums. By removing harmful contaminants, chlorine, and dissolved solids from your tap water, this system provides the perfect foundation for mixing salt or topping off your tank, preventing algae outbreaks and protecting your delicate aquatic life.

This unit features a comprehensive four-stage filtration process, including a high-efficiency sediment filter, a chlorine-removing carbon block, a Dow Filmtec 100 GPD reverse osmosis membrane, and a final stage of color-changing mixed-bed deionization resin to polish the water to absolute purity. The system is built for convenience with Mur-lok push-connect fittings for a quick, leak-free installation, and it includes 10 feet of color-coded tubing for easy setup. It also comes with both garden hose and faucet adapters to accommodate various water source connections, all mounted on a compact, space-saving bracket.

Ideal for aquarists with chlorinated city water or relatively clean well water, this 4-stage system is a perfect choice for maintaining pristine water quality. Its self-contained, single-bracket design makes it great for hobbyists with limited space under a sink or in a utility room, or for those who require a non-permanent connection that can be set up and taken down as needed. If you are looking for a reliable and efficient way to produce pure water for your aquarium, this BRS system offers an excellent combination of performance and value.