1.5 Cubic Ft. Raises pH as low as 5.5 up to a near-neutral level using naturally occurring calcium carbonate. Designed for 2-3 bathrooms homes with 1-5 people and treats up to 3.2 GPM. 10″ x 54″ inch Mineral Tank (Black) Manual BackWash Valve. Simple system connections & detailed instructions so most homeowners to install themselves! What is Acidic Water? Acidic water means your water has a pH balance of less than 7.0 and will actually eat away at your plumbing, as well as causing copper pipe = blue and green staining and galvanized pipe causing red staining from iron leaching out of pipes. Calcite is a naturally occurring calcium carbonate media. One of the advantages of Calcite is its self-limiting property. When properly applied, it corrects pH only enough to reach a non-corrosive equilibrium. It does not overcorrect under normal conditions. Upon contact with Calcite, acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces the potential leaching of copper, lead and other metals found in typical plumbing systems. Periodic backwashing will prevent packing, reclassify the bed and maintain high service rates. Depending on pH, water chemistry and service flow, the Calcite bed will have to be periodically replenished as the Calcite is depleted. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “aquatrue” and is located in this country: US. This item can be shipped to United States.