Aries Filter Works
Aries (AF-20-3690) 20"x2.5" Activated Alumina Filter
Made with FDA approved materials Fits 20" Big Blue housings Uses Resintech SIR-900 (activated alumina) media Flow Rate: 0.5 gpm Capacity: 2500 gallons Made in the USA Fluoride reduction is flow and pH sensitive. Best results with this filter are obtained at a flow rate of 0.5 gpm and an influent pH of 5.5. Higher flow rates and higher or lower pH causes a significant loss of capacity.