GrowoniX EX400 Reverse Osmosis Filter 400GPD

Growonix EX400 Reverse Osmosis System for 400 GPD The Growonix EX400 produces 400 GPD of near-zero-ppm water and flows about 17 gallons per hour at a 2:1 ratio. It is built with dual o-ring fittings and a steel pressure gauge, so you can read system pressure at a glance. A manual flush valve lets you purge salts off the membrane. Flush it for 3 to 5 minutes after each use, and the membrane lasts much longer. Recovery runs at 33% and can be dialed back for lower-quality feed water. Standard Green Coconut Carbon, KDF85 Upgrade Ready This base unit ships with the standard green coconut carbon filter, an NSF61-listed block that handles chlorine removal. It carries 8,000 gallons of capacity, or 3,000 gallons of RO water at a 2:1 ratio. On chloramine city water or well water with iron and hydrogen sulfide, step up to the KDF85 carbon filter instead. Want more output in winter or on low pressure? Add a BP-1530 booster pump to reach 80 PSI and push up to 450 GPD. Higher TDS or colder water will lower production. Key Features 400 GPD output: Flows 17 gallons per hour of near-zero-ppm RO water at a 2:1 ratio. Green coconut carbon filter: NSF61-listed block for chlorine removal, included standard. KDF85 upgrade ready: Step up to the KDF85 carbon filter for chloramine and well-water metals. Manual flush valve: Purges salts off the membrane to extend its life. Steel pressure gauge: Reads system pressure so you can track performance and filter condition. Dual o-ring fittings: Tight, reliable connections across the housing. Booster-ready: Pairs with a BP-1530 booster pump to hit 80 PSI and up to 450 GPD. Wide operating range: Runs at 40–105°F, pH 3–11, and 40–80 PSI feed pressure. Compact build: 14 x 7 x 21 in, 20 lbs, with 8,000-gallon carbon capacity. Technical Specifications Specification Value Brand Growonix SKU EX400 Production 400 GPD (up to 450 GPD with booster) Flow rate ~17 gallons per hour Ratio 2:1 (pure:waste) Carbon filter Standard green coconut carbon (NSF61), chlorine removal Carbon capacity 8,000 gal (chlorine); 3,000 gal RO at 2:1 Minimum feed pressure 40 PSI Recommended feed pressure 40–80 PSI Recovery 33% (adjustable for lower-quality feed) Operating temperature 40–105°F Operating pH 3–11 Dimensions (L x W x H) 14 x 7 x 21 in Weight 20 lbs