The Coconut Carbon Filter will remove sediment, chlorine, organic chemicals, etc. The Chloramine Carbon Filter will remove chloramines, chlorine, sediment, organic chemicals, etc. The Sediment Filter will remove silt, rust, sand, etc. The Ideal H2O units come with two RO membranes elements. When it is time to replace them, both must be replaced simultaneously. 1,500 gallons of RO water filter life. The Ideal H2O Hybrid Filter combines both a sediment filter and a carbon filter, removing both particulates and chemicals from the water. Works only with the Ideal H2O RO System - 75 GPD.