Aquasana EQ-SS20R SimplySoft Salt-Free Water Softener Replacement Media Replacement media for Aquasana Simply Soft Salt Free Water Softener: EQ-SS20 Use genuine Aquasana replacements only - untested replacements are not certified for performance capacity or contaminant removal No demineralization & no waste  does not chemically remove minerals from your water or put excess salt waste into our environment Gently and naturally conditions - uses innovative salt-free SLOW PHOS technology designed to prevent scale formation and protect from corrosion Replacements made easy - no plumber required. Replace every 6 months or 50,000 gallons