HydroLogic Evolution RO1000 Membrane Element | 600 GPD, 95% TDS

When the HydroLogic Evolution RO1000 Membrane Element Needs Swapping Creeping TDS at the outlet is how a membrane tells you it is done, and this is the element that goes back in. Its part number is HGC728774, superseding the older HL 22045, at 18.625 in long by 3.125 in across. Rated output is up to 600 gallons per day per element, cutting up to 95% of total dissolved solids at 65 psi and 77 degrees. Two of them fill a complete system. What Shortens the Life of Evolution-RO1000 Replacement Filters Service life runs from six months to two years, a wide window because it depends on what the pre-filters upstream are letting through. Chlorine is the fast killer, and a spent carbon stage will take an element out long before its rated life. Cold feed water is the other surprise, since output drops with temperature and a winter garage reads low with nothing actually wrong. Key Features Up to 600 GPD per element: Rated at a baseline of 65 psi, 77 degrees and 500 ppm feed water. Up to 95% TDS reduction: Measured across total dissolved solids rather than a single ion. Two elements per system: A complete Evolution-RO1000 runs a pair, so plan changes and spares in twos rather than singles. Direct HGC728774 fit: Slides into the existing Evolution-RO housing in place of the discontinued HL 22045 element. Six months to two years of service: The spread depends on pre-filter maintenance, which is the single biggest lever a grower controls here. Technical Specifications Specification Value Manufacturer Part HGC728774 (replaces HL 22045) Element Size 18.625 in x 3.125 in Rated Production Up to 600 GPD per element TDS Reduction Up to 95% Test Conditions 65 psi / 77 degrees F / 500 ppm Service Life 6 months to 2 years Quantity Per System 2 Compatible System Evolution-RO1000 Weight 2.28 lbs