The AquaFX Blue Marlin PRO RO/DI System 1000GPD is a professional-grade water purification system engineered to produce up to 1000 gallons of zero TDS (Total Dissolved Solids) water per day. This robust unit is essential for maintaining the pristine water quality required by sensitive saltwater reef aquariums, coral farms, and commercial aquatic facilities, effectively removing impurities and contaminants that can harm marine life. Hand-built in the USA, this high-capacity system features a heavy-duty commercial-grade booster pump, a back-lit triple TDS meter for precise monitoring, and both high-pressure and low-pressure switches for operational safety. Its seven-stage filtration process includes a 10x54 Reverse-Flow Chloramine Blaster Carbon pre-filter, a 20-micron pleated sediment pre-filter, two 1-micron sediment filters, a 1000GPD commercial-grade RO membrane, and two 20x2 mix-bed color-change DI cartridges with USA resin, all housed in durable 20-inch canisters and a stainless steel membrane housing, mounted on a rust-free solid aluminum bracket. Specifically designed for the demanding needs of aquarium stores and large-scale coral farms, the Blue Marlin PRO ensures a reliable and abundant supply of ultra-pure water. Its commercial-grade components and high daily output make it an indispensable tool for professionals who require consistent, high-quality water for mixing saltwater, topping off tanks, and supporting extensive aquatic systems, safeguarding the health and vitality of valuable marine inhabitants.