GreenFlo 2.0 Cu. Ft. Catalytic Carbon Upflow System with KDF-55 and Vortech Tank - Removes Heavy Metals and Controls Bacteria (NO ELECTRICITY OR BACKWASHING NECESSARY) Upflow system for chlorine, chloramines, heavy metals, chemicals, and bacteria control Catalytic carbon filter removes chlorine, chloramines, tastes, odors, and many other chemicals KDF 55 removes up to 99% of water-soluble lead, mercury, chromium, and other dissolved metals Upflow Vortech tank for optimum performance, better filtration, no backwashing, and no electricity! Complete with 2.0 cu. ft. catalytic carbon, 10 lbs. KDF55, 12" Vortech tank, and bypass valve