Aquacera AquaMetix Replacement Filter for EcoFast Filters Aquacera Aquametix replacement filter for the EcoFast undersink water filters. Reduces Fluoride including Fluorosilicic acid additive type Arsenic, Cadmium, Chromium, Copper, Mercury, Nickel, Radionuclides, Silver and Zinc Estimated capacities are based on 2ppm influent concentrations with &gt;50 to 90% Reduction. Lead reduction 99% with 500 gallon capacity.