Replacement Filters
Now offering yearly filter replacement subscriptions!
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3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, pH, Radial Flow Carbon
$169.005-micron sediment filter pH neutralizing filter Radial flow carbon filter Standard 4.5-inch x 20-inch size Replacement filter kit for 3-stage Big Blue systems includes a sediment filter for dirt and particulates, pH filter for acidic water, and a...RFK3-4520-SDpHRF$169.00 -
20-inch Big Blue 2 Stage Filter Kit with Sediment & Matrikx Pb1 Filters
$179.00Replacement filter set for the 2 stage Big Blue 20" filter system includes sediment and Matrikx Pb1. Product Features 20" BB Sediment 5 micron Big Blue sediment filter for sand, sediment, and particulates 20" BB Matrikx Pb1 0.5 Micron...RFK2-4520-SDPb$179.00 -
10-inch pH Calcite Filter
$29.00The 10" pH filter can be used to replace current filters or upgrade from existing filters. The calcite media enables the filter to neutralize acid to a more neutral level and adds beneficial minerals in the process. The filter measures 2.5-inch in...PH-2510$29.00 -
Slimline 2.5-inch by 20-inch Bone Char Carbon Filter - Reduces or Removes Fluoride, Arsenic, Radioactive Particles, and Toxic Metals
$139.00Bone Char Carbon The bone char carbon filter reduces or removes fluoride, arsenic, radioactive isotopes, iron, lead, mercury, aluminum, silver, bromine, manganese, and more. Plus, it removes chemicals, tastes & odors, chlorine,...BC-2520$139.00 -
20-inch GAC Filter
$34.00The 20" GAC filter can be used to replace a current filter or upgrade from the carbon block filter. The filter measures 2.5-inch in diameter and 20-inch long and fits all standard 20-inch housings. Product Features GAC Granular activated...GC-2520$34.00 -
10-inch Green Carbon Filter for Triton RO DI 22150
$22.00Earth friendly green carbon filter manufactured through a process requiring less energy than standard carbon filters Product Features Green Carbon Block Manufactured process uses reduced heat and byproduct recycling for an earth friendly...CB-2510-22150$22.00 -
20-inch Big Blue DI Filter
$88.00Replacement filter set for the 2 stage Big Blue 20" filter system includes two DI filters. Product Features 20" Big Blue DI Big Blue Deionization filter for ultra pure water Common Size Filters Fits Big Blue 20" filter housings. The...DI-4520$88.00 -
10-inch Catalytic Carbon KDF 85 Filter
$49.00The 10" GAC/KDF 55 filter can be used to replace current filters or upgrade from the carbon block or standard GAC filters. The KDF 55 media enables the filter to remove heavy metals, including iron, lead, and mercury. The filter measures 2.5-inch in...CC-2510-85$49.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, pH, and Bone Char
$269.00Replacement or upgrade for standard Big Blue systems Sediment filter pH filter Bone Char Carbon filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Sediment filter removes a wide range of dirt and particulate, increasing...RFK3-4520-SDPHBC$269.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" Sediment and pH
$109.00Replacement or upgrade for standard Big Blue systems Sediment filter pH filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Sediment filter removes a wide range of dirt and particulate, increasing water clarity. The pH filter...RFK2-4520-SDPH$109.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" pH and KDF 55
$169.00Replacement or upgrade for standard Big Blue systems pH filter KDF 55 filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. The pH filter is calcite based and neutralizes acid (ph <7) in the water. The KDF 55 filter is...RFK2-4520-PH55$169.00 -
20-inch pH Filter Slimline
$39.00The 20" pH filter contains calcite that dissolves slowly in water to neutralize acid. It also contains GAC for optimal flow and treatment of tastes and odors. Product Features pH Filter This filter is designed to treat low pH levels found in...PH-2520$39.00 -
20-inch Big Blue 2 Stage Filter Kit - Sediment and Nitrate
$303.00Replacement or upgrade for standard Big Blue systems Sediment filter - 5-micron Nitrate filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. The initial sediment filter reduces sand, sediment, dirt, and other particulates. The...RFK2-4520-SDNT$303.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, pH, and KDF 55
$199.00Replacement or upgrade for standard Big Blue systems Sediment filter pH filter KDF 55 filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Sediment filter removes a wide range of dirt and particulate, increasing water clarity...RFK3-4520-SDPH55$199.00 -
Twist Loc Replacement Filter Kit for Nelsen Reverse Osmosis System - 2 Sets of Replacements
$179.00Quick Change Twist & Loc RO Replacement Filter Kit - Includes two (2) TWIST-SEDIMENT and four (4) TWIST-CARBON cartridges. This will give you a total of TWO replacements for each filter.Twist-Annual$179.00