AXEON® Calcite Upflow Systems use advanced calcite pH-adjusting media to correct acidic water to a noncorrosive equilibrium. Available in six tank sizes from 9" x 48" to 16" x 65", these systems are designed for maximum performance with minimal maintenance. Ideal upstream of RO systems, boilers, and plumbing where low pH water causes corrosion, staining, or premature equipment failure.Each system ships media pre-loaded with Clack 1191 In/Out valve - no electrical requirements. As the calcite media is consumed neutralizing acidic water, it will gradually deplete and require periodic replenishment. The quick-disconnect built into the In/Out valve makes media replenishment straightforward. Select your tank size in the spec table below.Features Calcite pH-adjusting media - effective in correcting acidic water to a noncorrosive equilibrium Clack 1191 In and Out valve with non-corrosive UV-resistant valve body and quick-disconnect for easy media replenishment Structural® heavy duty fiberglass tank Heavy duty riser pipe and lower screen Media pre-loaded - ready to install 1" MNPT connections No electrical components required Media will deplete over time and require periodic replenishment Applications Correction of low pH (acidic) water ahead of RO systems, boilers, and plumbing Protection of downstream equipment from corrosive water pH stabilization for grow facilities and water treatment systems Reduction of blue-green staining caused by copper pipe corrosion from acidic water Specifications by Tank Size 9" x 48" 10" x 54" 12" x 52" 13" x 54" 14" x 65" 16" x 65" Cubic Feet of Media 1 1.5 2 2.5 3 4 Rec. Service Flow (gpm) 1.3 - 2.6 1.6 - 3.2 2.4 - 4.8 2.8 - 5.6 3.2 - 6.4 4.2 - 8.4 Est. Peak Flow (gpm) 12 14 16 17 18 20 Control Valve Clack 1191 In and Out Connection 1" MNPT Voltage N/A Media Pre-Loaded Yes Related Products AXEON® GACC Upflow Activated Carbon Systems - for chlorine and chloramine reduction AXEON® PH-4520 pH Neutralizing Calcite Cartridge - cartridge-based pH correction option Shop all AXEON® Water Filtration at Hydrobuilder Need help sizing a calcite system for your water chemistry? Call 888-815-9763.