The AquaFX Barracuda RO/DI System 100GPD is a premium 4-stage reverse osmosis deionization unit designed to produce ultra-pure, laboratory-grade water for saltwater reef aquariums. This essential equipment effectively removes harmful impurities, phosphates, and total dissolved solids (TDS) from tap water, ensuring a pristine and safe aquatic environment for sensitive marine life. Hand-built in the USA, this system features a robust filtration process including a 1-micron sediment filter, an AquaFX Chlorine Guzzler carbon block pre-filter, a high-quality TFC RO membrane, and a color-indicating mixed bed Zero TDS DI resin. It boasts a 100 gallons per day flow rate, quick-disconnect fittings for easy setup, a pressure gauge for monitoring, and comes with a 10-inch canister filter wrench for convenient maintenance, all mounted on a heavy-duty aluminum bracket. Recognized as a top industry choice, the AquaFX Barracuda is perfect for residential reef enthusiasts, from dedicated hobbyists to professional service companies, who require consistently pure water for their top-off and makeup needs. By providing zero TDS water, it prevents the introduction of unwanted contaminants that can lead to algae issues or stress corals and fish, making it an indispensable tool for maintaining a thriving reef aquarium.