Individual Replacement Filters

LayneRT Arsenic Removal Filter Big Blue 4.5-inch x 10-inch High arsenic removal capacity Minimal flow restriction Standard 4.5-inch x 10-inch filter size Big Blue 10" filter with LayneRT resin offers excellent removal of Arsenic with less...

Nitrate/nitrite reduction filter Aries brand - made in the USA Standard 4.5-inch x 20-inch filters Aries AF-20-3610-BB Standard Big Blue filter fits standard 4.5-inch x 20-inch housings. Nitrate filter reduces nitrates and nitrites in the water,...

Replacement granulated activated carbon (GAC) filter cartridge. This filter is used on Nelsen Twist Loc RO systems. This would replacement the carbon block pre-filter on your system. 

Twist-Loc Alkalinity replacement filter cartridge. This is used in Nelsen Twist Loc RO systems. You can add this filter onto your system to achieve alkaline water and raise your pH level of your drinking water. This filter would be installed after the...

Earth 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...