The VermiLogic Water Purification system was specifically designed by HydroLogic for the Vermi T 5/10 Bio-Extractor. This unit instantly reduces chlorine/chloramine and sediment, making tap water ideal for the Vermi T extraction process. The VermiLogicTMis also ideal for filling up reservoirs or making city water taste great! This filter lasts for up to 1000 gallons before it has to be replaced. There's no waste water; just hook it up to your standard household faucet and you're good to go! This filter was specifically designed so that it can be recycled and refurbished. When you're ready for your new filter, just return your old filter to your retail store to be recycled. Low cost no waste! 0.5 GPM UP TO 1000 GAL FILTRATION.