Replacement Water Filter Replacement Set for 4 Stage Reef-Aquarium Deionized Reverse Osmosis Water Filter System; Membrane Not Included Omnipure (ELF XL C-249) 12.5"x4" Diameter ELF XL ALL C-249 Resin Heavy Bioload or Medication

Heavy Bioload or Medication

Built for chloramine removal where GAC falls short

Poly Wound

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Replacement Water Filter Replacement Set for 4 Stage Reef-Aquarium Deionized Reverse Osmosis Water Filter System; Membrane Not Included Omnipure (ELF XL C-249) 12.5"x4" Diameter ELF XL ALL C-249 Resin Heavy Bioload or MedicationThis 3 piece replacement filter set keeps your 4 stage reef aquarium reverse osmosis deionization system producing ultra pure water at zero to near zero TDS levels. Includes sediment pre filter, carbon block pre filter, and color changing DI cartridgemembrane sold separately. SPECIFICATIONS What's Included in This Replacement Set Sediment Pre Filter 5 Micron Removes dirt, rust, and particulates Carbon Block Filter 5 Micron Removes chlorine and