Backwash Bed Expansion - 35% of bed depth Bed Depth - 24 - 30 in. Advantages: High uniformity coefficient for maximum contact for controlled pH correction Slower reacting Proud Wife of A Us Veteran Military Sticker Decal for Wall, Laptop, Cell, Truck Sticker for Windows, Cars, Trucks 5 Inch Brand 10 lbs Acid Neutralization Media. Acidic waters on contact with Calcite slowly dissolve the calcium carbonate media to raise the pH which reduces the potential... neutralizer parts,filter media calcite|Calcite + Corosex 1 (90 CA/10 CO Composition - CaCO3, 95% minimum - MgCO3, 3.0% maximum 10 lbs Acid Neutralization Media. Used to raise pH of acidic water Acidic waters on contact with Calcite slowly dissolve the calcium carbonate media to raise the pH which reduces the potential leaching of copper, lead and other metals found in typical plumbing systems. Backwash Rate - 8-12 GPM/sq. ft. Acid Neutralizer Water System Calcite - Calcium Carbonate To Neutralize Water - 0.55 Cu.ft Per Bag Ph Tester