Replacement Filters
Now offering yearly filter replacement subscriptions!
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RO Zoi Sigma Pure Filter Kit (incl. UV Bulb)
$209.00This filter set is designed for the Zoi Sigma Pure system. The standard size filters work in most reverse osmosis systems available as well. The kit includes a 5 micron sediment filter, a GAC filter, a 5 micron carbon block filter, a replacement bulb for...DFK-Sigma$209.00 -
20-inch Big Blue 2 Stage Filter Kit with Sediment Filter & Catalytic Carbon/KDF-85 Filter
$179.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The Catlytic Carbon/KDF-85 filter contains 4.0 lbs. of KDF-85...RFK2-4520-SD85$179.00 -
RO/DI Psarion Psi Reef Filter Kit (replaces RFDIFK)
$67.00Filter set fits RO/DI ReefMaster systems. Includes sediment, carbon, full size DI, and inline DI filter. Product Features Replaces RFDIFK Identical product, updated part number 10" 1µ Sediment 1 micron sediment filter for...AFK-Psi$67.00 -
Big Blue 10-inch Carbon Filter 5-micron
$49.00Big Blue 10" Carbon Block Filter (replaces CABBB10) Product Features 5µ Carbon Block Solid carbon for removal of chlorine, tastes, odors, and chemicals Replaces CABBB10 Identical product, updated part number Big Blue 10" Fits Big...CB-4510-5$49.00 -
Omnipure Inline DI Filter - 2.5-inch x 10-inch (K5555-JJ)
$37.00Omnipure inline DI Filter w/ quick connect fittings - 2.5-inch x 10-inch (K5555-JJ) Product Features DI Deionization resin for removal of up to 99.9% of contaminants Omnipure Genuine Omnipure DI filter (K5555-JJ) Larger Size Industry...DI-2510-14Q$37.00 -
20-inch Big Blue 3 Stage Filter Kit with CatCarb/KDF 85, Activated Alumina, and Sediment Filters
$289.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-85AASD$289.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Radial Flow Carbon Filter
$235.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The activated alumina filter removes lower levels of both...RFK3-4520-SDAARF$235.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC, and Carbon Block Filters
$166.00Replacement filter set for 3 stage Big Blue 20" filter system. Includes the carbon block filter, GAC (granular activated carbon) filter, and sediment filter. Filters need replaced at least once a year, every 6 months is average for most homes...RFK3-4520-SDGCCB$166.00 -
Big Blue 10-inch Empty Cartridge Shell
$22.00The Big Blue 10-inch empty cartridge shell allows you to make your own custom whole house filter to treat exactly what you want in your water. Or, you can save money and refill it after the media is exhausted several times over. It includes the shell,...EC-4510$22.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF55, and Carbon Block Filters
$169.00Replacement filter set for 3 stage Big Blue 20" filter system. Includes the carbon block filter, GAC/KDF55 filter, and sediment filter. Filters need replaced at least once a year, every 6 months is average for most homes. Product Features 20"...RFK3-4520-SD55CB$169.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF 85, and Radial Flow Carbon
$245.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-SD85RF$245.00 -
Big Blue 10-inch AdEdge Bayoxide® E33 Filter for Arsenic
$129.00The Big Blue 20" AdEdge Bayoxide E33 filter is used to reduce arsenic. The filter measures 4.5-inch in diameter and 20-inch long and fits all standard 20-inch Big Blue housings. Product Features AdEdge Bayoxide® E33 Industry leading...AE-4510-E33$129.00 -
Big Blue 20-inch AdEdge Bayoxide® E33 Filter for Arsenic
$209.00The Big Blue 20" AdEdge Bayoxide E33 filter is used to reduce arsenic. The filter measures 4.5-inch in diameter and 20-inch long and fits all standard 20-inch Big Blue housings. Product Features AdEdge Bayoxide® E33 Industry leading...AE-4520-E33$209.00 -
Portable RO Mikro Alpha Filter Kit
$38.00This filter set is designed for the Mikro Alpha portable RO system. The inline filters work with most reverse osmosis systems available as well, and includes two inline GAC filters and an inline sediment filter, all with 1/4" quick-connect fittings...PFK-Alpha$38.00 -
20-inch Big Blue 3 Stage Filter Kit with GAC/KDF 55, Activated Alumina, and Sediment Filters
$259.00The 5 micron sediment filter is a 100% polypropylene filter contains graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 55 filter contains 4.0 lbs. of KDF-55 media, along...RFK3-4520-SD55AA$259.00