GAC + KDF 55 + KDF 85 Refill Media Kit – Fits 4.5" x 20" Whole House Well Water Filters – Reduces Iron, Sulfur & Chlorine reefing Helps restore minerals lost in

Helps restore minerals lost in the RO process

and shortened appliance life—this cartridge provides an easy and effective solution

while KDF85 reduces sulfur

Add our KDF MediaGuard at the time of purchase

GAC + KDF 55 + KDF 85 Refill Media Kit – Fits 4.5" x 20" Whole House Well Water Filters – Reduces Iron, Sulfur & Chlorine reefing Helps restore minerals lost inRefill Media Kit for Big Blue 4. 5" x 20" Well Water Filter KDF 85, KDF 55 & Activated Carbon for Iron, Sulfur, Chlorine, and Heavy Metal Reduction Compatible with 20" Big Blue Housings by Oceanic Water Systems Product Description Overview Upgrade your Big Blue 4. 5" x 20" refillable well water filter with our premium GAC + KDF 55 + KDF 85 media refill kit, engineered to effectively reduce iron, sulfur, chlorine, and heavy metals. Perfect for