Hydro Logic TALLBoy De-Chlorinator & Sediment Filter, 120 GPHTALLBoy from Hydro Logic Dont give your plants straight hose water! This filter unis is rated at up to 99% chlorine removal @ 2 GPM flow and can clean up to 90% of the sediment particles above 5 microns. This filter is not designed to significantly lower the Parts Per Million (PPM) of your water. The majority of PPM is minerals which can only be removed with Reverse Osmosis. If you are looking for Reverse Osmosis filters, Hydro Logic has the Stealth