The AquaFX Afishionado Special RO/DI 100GPD System is a high-performance, 7-stage reverse osmosis deionization unit meticulously engineered in collaboration with Afishionado from Reefs.com. This advanced system is custom-built to provide reef hobbyists with an ultimate solution for producing consistently pure, zero TDS (Total Dissolved Solids) water essential for thriving saltwater aquariums. It ensures optimal water quality by effectively removing impurities, contaminants, and dissolved solids from tap water. This system boasts a standard booster pump with high/low pressure switches and solenoids to optimize RO membrane performance and longevity. It includes a sophisticated auto-flush controller integrated with a TDS meter, a triple-stage deionization system featuring Cation, Anion, and Mixed-Bed resins, and dual Chloramine Blaster Carbon filters specifically designed to tackle chloramines. Further enhancing its functionality are a backlit dual-TDS meter, an adjustable flow restrictor, and robust dual heavy-duty aluminum brackets for secure mounting. Ideal for advanced reef hobbyists and anyone seeking the most dependable and efficient method for generating pristine aquarium water, this system addresses the critical need for absolute purity. Its comprehensive design ensures flawless operation with minimal user intervention, making it perfect for maintaining sensitive reef environments where consistent zero TDS water is paramount for coral health and overall tank stability. The chloramine-specific filtration provides peace of mind for those in areas with treated water.