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4.5″ X 20″ Organasorb PHA Big Blue filter for all Whole Home PHA Structured Water Oxyguard Systems and for HydroRS conversions.
Should be replaced yearly.
This replacement filter goes inside your 20″ filter housing and utilizes the most technologically advanced German media to filter water and drop pH to enhance filtering capacity and effectiveness of the Big tank filter.
Any questions please call 208-462-0626