City water can carry two things you may not want in your glass: the chlorine used to disinfect it and the fluoride many cities add. Treating both usually takes two filter housings. This cartridge does both jobs in one. The SMART + Calcium GAC Fluoride Reduction Cartridge combines Crystal Quest Calcium GAC, our bone char fluoride media, with SMART multi-media filtration: coconut shell GAC, Eagle Redox Alloy 6500 and 9500, and two 1-micron filtration pads. Use it when your system specifies the calcium GAC and SMART combination. At a glance
Two treatments, one cartridge: bone char for fluoride plus SMART media for chlorine taste and odor
Real bone char: 70 to 76% hydroxyapatite and 9 to 11% carbon, per Crystal Quest's Calcium GAC data sheet
Crystal Quest redox media: ERA 6500 and ERA 9500 add chlorine and metals reduction
Two 1-micron pads hold the media in place and catch fine particles
Four sizes, 0.5 to 6 GPM, for countertop, under-sink and whole house housings
What you are looking at A sealed cartridge shell with polypropylene end caps, polyolefin inner and outer wraps and polyethylene netting. Inside, black bone char granules share the shell with coconut shell carbon and the metallic ERA granules, held between two 1-micron filtration pads. The size and part number are printed on the label. How the two halves work Half one: bone char captures fluoride Calcium GAC is black granular bone char, made by calcining cattle bones until a mineral framework of hydroxyapatite with a carbon surface remains. Hydroxyapatite holds hydroxide groups in its crystal. Fluoride has the same charge and almost the same size, so it takes the hydroxide's place and forms fluorapatite, a stable mineral that stays locked in the media. At higher fluoride levels some fluoride also precipitates as calcium fluoride. Bone char works gradually and performs best in neutral to slightly acidic water, so slower flow through the cartridge gives it more contact time. Half two: SMART media handles chlorine and more Coconut shell GAC adsorbs organic chemicals and the compounds behind chemical tastes and odors, and it converts free chlorine to harmless chloride. Eagle Redox Alloy is Crystal Quest's copper-zinc redox media: ERA 6500 targets chlorine and ERA 9500 targets ferrous iron and hydrogen sulfide, and the redox reaction also holds some dissolved heavy metals on the media. Why pair them In multi-housing systems Crystal Quest places the SMART stage ahead of the fluoride stage. This cartridge puts both into one shell, so a single housing delivers fluoride reduction and SMART filtration together. If you have room for two housings, a standalone SMART cartridge followed by a Calcium GAC Fluoride Reduction Filter Cartridge gives each media a full shell of its own.
What it reduces Primary targets: fluoride (inorganic fluoride in municipal water) and chlorine with its taste and odor. Also addressed by the media (capabilities of the media, not separate tested ratings for this cartridge):
Heavy metals such as lead, through the bone char and the ERA redox media
Some dissolved organic chemicals and colored compounds, through the carbon surfaces
Fine particles, through the two 1-micron pads
Not designed to treat: bacteria and viruses, nitrate, arsenic, hardness or total dissolved solids (TDS). Is it right for my water? It is built for inorganic fluoride in municipal water. If your fluoride comes from a well or another natural source, or is organic, talk to a Crystal Quest specialist first. Bone char is animal-derived; for a non-animal fluoride media, choose the SMART + Aluminum Oxide Fluoride Reduction Filter Cartridge. Why Crystal Quest
Our default fluoride media. Calcium GAC is the standard fluoride cartridge media across Crystal Quest systems. The SMART + Aluminum Oxide Fluoride Reduction Filter Cartridge (activated alumina) is an interchangeable alternative for people who prefer it.
Media we name. Calcium GAC and ERA each have a Crystal Quest data sheet, summarized in the Specifications tab.
One housing, two jobs. The right answer when your system has a single fluoride housing or you want to free a stage.
Over 1,000,000 people served since 1994. Crystal Quest builds under ISO 9001 quality management, has made water filtration in the USA for over 30 years and offers lifetime support by phone, email or chat.
Where it fits
Single fluoride systems that specify the SMART and calcium GAC combination use this one blended cartridge.
Not a drop-in for every SMART slot: a standard SMART position, a reverse osmosis pre-filter or a whole house RO stage takes a standard SMART cartridge unless your system calls for this combination.
Choose the size printed on your current cartridge or in your order history: 2-7/8" x 9-3/4" (CQE-RC-04152), 2-7/8" x 20" (CQE-RC-04153), 4-5/8" x 9-3/4" (CQE-RC-04154) or 4-5/8" x 20" (CQE-RC-04155). Common questions
How is this different from standalone calcium GAC? This cartridge combines the fluoride treatment with SMART...
