The Hydro Life Hydroponics C-85 Inline hose Filter has Catalytic Carbon filtration to provide you with safer, cleaner water from any potable source Catalytic carbon along with KDF 85 can reduce up to 98% of chloramines and heavy metals from potable water. KDF 85 bonds and traps heavy metals and can help prevent bacteria growth when the filter is not in use and to extend the overall life of your hydroponic filter. Durable in-line hose filter has a wide body for high flow and a 8,000 gallon capacity with up to 2.5 GPM flow rate. Product includes flexible hose protector to reduce strain on your supply faucet/spigot from the weight of the filter. When first attaching the filter to your water source, allow the water to run free for a few minutes to flush the initial loose carbon fines or dust out of the filter. When the water runs clear, the filter is ready for use.