Crystal Quest Tannin and 750000 gallons water filter. Water travels through 6 stages of filtration. Poly Glass mineral tank fil Led with Eagle Redox Alloy and GAC with a brine water conditioner. Poly Glass mineral tank fil Led with a Tannin reducing media. Riser style 1 internal flow distributor. Solid state microprocessor with Led display Electronics control valve. 11.0 gallon-per-minute Flow rate. Chrome sleeve/jacket - Polyester fiberglass tank. 3/4 or 1 Stainless Steel Bypass Valve. Filtration capacity: 750000 gallons. Resin/Cu. ft.: 1.5 each tank Tank Size: 10 x 54.