OMNIFilter OM34K-S-S06 Twin Tank Water Softener, Black 34,000 grain water softener for homes with 2-4 people Enjoy spot-free dishes, sinks, showers, and a longer life for clothes and linens Reduces hardness, scale, iron, calcium and lime Includes, digital display, drain tubing, bypass valve and fittings Smart Reserve Technology - anticipates daily water usage and ensures optimum efficiency and dependability