The best-selling water filter worldwide just got a major upgrade. After 10 years of almost no changes to HydroLogic’s best-selling line of reverse osmosis filters, the venerable Stealth systems are getting a major upgrade, taking a great system and making it even better—50 per cent better to be specific—with all new models cranking out more gallons per day than ever before. All Stealth RO100s will now be Stealth RO150s, and Stealth RO200s are now Stealth RO300s. To make this deal even sweeter, all new Stealth 150 and 300 models come with a Membrane Power Flush Kit, for extending the life and optimizing the performance of the membrane, and your choice of 1:1 or 2:1 water-to-waste ratios (both included in the box), at the same great low price as HydroLogic’s original models. HydroLogic prides itself on quality, service, and unbeatable value. Nothing else even comes close!