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Best Option - UltraWater Filter
UltraWater starts with the BioStone Plus compressed impregnated carbon block, we then turbocharge it with UltraWater Wrap technology ensuring unmatched reduction. Up to 99.9% of virtually all contaminants, including Chloramine, pharma, heavy metals - even the toughest like chromium V1 and arsenic. Add Scale Guard protection and it out performs any other filter we know of. Clearly your best choice. Used in Filter 2 position for the Athena Classic. (Rated for 1000 gals)