Home Master ISetTMA8 Artesian And HydroGardener Replacement Water Filter Change Set, White Uses modular filters where the filter element and the filter housing are all-in-one assembly for quick and easy annual filter changes (1) 5 micron spun poly, high holding depth sediment water filter, (1) 5 micron catalytic carbon water filter (1) 5 micron Artesian remineralization and coconut shell granular activated carbon water filter Operation conditions feed water PSI 40 to 100 PSI, pH limits 4 to 10 No wrenches necessary. Please refer the User Guide before use.