Specifications 1.5 cu. ft. resin 48,000 grain capacity 750,000 gallon capacity Service Flow: 9-11 GPM Dimensions: 10" x 54" Stainless Steel or Fiberglass 2.0 cu. ft. resin 60,000 grain capacity 1,000,000 gallon capacity Service Flow: 10-13 GPM Dimensions: 12" x 52" Stainless Steel or Fiberglass View our Comparison Chart of all Whole House Nitrate Removal Systems TANK 1: Remove high levels of Nitrate from water Tank 2: SMART Water Filtration In addition to the the specialty Nitrate Removal filter, this SMART Series system provides Filtration & a Balanced pH. SMART Filters use our special house blend known as SMART Multimedia , which includes 2 types of coconut shell Granulated Activated Carbons ( Standard & Catalytic GAC) infused with our Eagle Redox Alloys® 6500 & 9500 , and ion exchange resin to reduce contaminants such as heavy metals, i.e. lead & mercury, chlorine, chloromine, & inorganic products such as herbicides, pesticides, petroleum/pharmaceutical by-products and achieve a balanced pH. To read about how GAC's work, click here . To read about the ERA® Oxidation/Reduction Process, click here . Your water may still be hard. To get a system with a softener addition to this product, click here . Remove hardness from water with a Softener. A softener conditions hard water to achieve the clearest, softest, Nitrate-free water. Water is hard when it contains minerals like calcium and magnesium. You may see staining on your sinks, tubs, showers, and clothing. You may also notice less lather from your shampoos and soaps and even a feeling of film on your skin. All these are symptoms of the need for softened water. Hard water also causes a higher risk of lime scale deposits in household water systems. The negative effect of lime scale buildup is that pipes are blocked and the efficiency of hot boilers and tanks is reduced. This increases the cost of domestic water heating by about fifteen to twenty percent. Another negative effect of lime scale is that it has damaging effects on household machinery, such as laundry machines. Water softening means expanding the lifespan of household machines, and the lifespan of pipelines. It also contributes to the improved working and longer lifespan of solar heating systems, air conditioning units and many other water-based applications. Water travels through 6 stages of filtration: Stage 1: Water flows through a 20" sediment filter cartridge that removes sediment, silt, sand and dirt. Also extends the life of the water softener, water filters, and prevents damage to control valves or pumps. Stage 2: Water flows through a nitrate reducing mineral tank. In addition, we add our medias, ERA® 6500 & 9500 to prevent bacteria growth. Stage 3, 4 & 5: Water flows through SMART Multimedia , which includes 2 types of coconut shell Granulated Activated Carbons ( Standard & Catalytic GAC) infused with our Eagle Redox Alloys® 6500 & 9500 , and ion exchange resin to reduce contaminants such as heavy metals, i.e. lead & mercury, chlorine, chloramine, & inorganic products such as herbicides, pesticides, petroleum/pharmaceutical by-products and achieve a balanced pH. Stage 6: Water flows through a 20" solid carbon cartridge for removing volatile organic carbon compounds (VOC's), insecticides, pesticides and industrial solvents. Eaglesorb Nitrate Removal Replacement Media OUR GUARANTEED PERFORMANCE 42 / 61 * All parts, components and media are NSF Certified