POSTreat FluoRid Media Refill
Two POSTreat Fluoride Reduction Filter packages on a white background
Three gold-colored packaging bags with 'POSTreat' branding on a light gray background

    POSTreat FluoRid Media Refill

    Our first-of-its-kind specialized fluoride filtration uses our proprietary FluoRid media to remove more than 95% of fluoride from your water, while retaining the nutrients your body needs.
    *Fluoride removal cartridge for drinking water, compatible with all Gravity Systems. Must be used in conjunction with a primary Phoenix Gravity Smart Carbon Cartridges, it’s not a stand-alone.*
    Looking for the complete Phoenix Gravity System? Find it here.
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    • Pack of 1 lasts up to 4 months
    • Pack of 2 lasts up to 8 months
    • Pack of 3 lasts up to 12 months
    £33.15
    £39.00

    What’s in the box?

    • 2 x Replacement media for POSTreat Fluoride Removal Cartridges.

    • Removes >95% of fluoride from your water.

    • Lasts up to 4 months.

    Key Features

    • Proprietary refill media formulated for the POSTreat cartridge, removes more than 95% of fluoride and arsenic from your water.
    • Designed for replacement every 4 months, providing a sustainable refill option rather than replacing the entire cartridge.
    • Engineered to reduce waste; ideal for long‑term use and cost efficient.
    • Phoenix Gravity Smart Carbon Cartridges are precisely engineered for compatibility with almost all gravity-fed water systems, delivering consistent performance and clean, safe water you can rely on.

    Shipping and Returns

    • Refunds are processed within 2 business days upon receiving and inspecting the returned product, and the amount will be credited to your original payment method within 7 business days.
    • A full refund is issued only if the complete product is returned; partial returns receive partial refunds.
    • Exchanges are available only for items with manufacturing defects or faults.
    • Return shipping is the customer’s responsibility and is non-refundable. For items over £99, we recommend using a trackable shipping service.
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    • 208

      100 day money-back guarantee when purchased with the complete Phoenix Gravity system

    fluoride

    Removes more than
    95% of fluoride

    304-stailess steel

    Housed in highest-grade stainless steel

    compatible

    Perfectly compatible with Phoenix Gravity Filter System

    lower-cost

    Less waste, fewer
    refills, lower cost

    better-taste

    Better taste you can
    trust for 40+ years

    Product description:

    • World’s first refillable fluoride removal cartridge uses advanced technology to remove more than 95% of fluoride, without using reverse osmosis.
    • Fuses natural force of gravity with the highest-grade environmentally-friendly materials for the most effective and sustainable Fluoride removal on the market.
    • Less waste and plastic than other fluoride removal cartridges - no electricity required.
    • Housed in 304 stainless steel, the most chemically-neutral and safe material for domestic water filtration, perfectly compatible with all Gravity Systems and easy to set up.
    • The POSTreat is designed for maximum re-use, with our replaceable proprietary FluoRid Filtration media- refillable every 4 months.
    • Refill for our POSTreat Steel Fluoride Removal Cartridge, the world’s first refillable fluoride removal cartridge
    • FluoRid is our propriety media, formulated to remove more than 95% of fluoride.
    • FluoRid media needs to be replaced every 4 months.
    • Our convenient sachets enable you easily to change the FluoRid media in your POSTreat yourself.
    • By replacing just the media rather than the whole cartridge we save on years worth of discarded material.

    Designed for durability

    • Like the Phoenix Gravity System, the POSTreat has a stainless steel housing that won't leach polyurethane, microplastics, toxins or harmful chemicals into your water over time.
    • Rust-resistant to withstand the rigours of everyday use for 10+ years.
    • The uniquely replaceable FluoRid Media sachets last for 4 months.
    POSTreat

    Better quality you can taste, on tap.

    Complete Purchase

    Go one step further for fluoride removal:

    • Our additional POSTreat filter removes more than 95% of fluoride for highly targeted filtration
    • Works in tandem with Phoenix Gravity Filters made of 304 grade stainless steel
    • Designed for maximum reuse, the first on the market with refillable environmentally-friendly materials
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    postreat_desktop_353c1e67-dbfe-4fb6-8da1-0b254a86d917
    postreat-mobile

    Filtration At Its Finest

    141_1

    Removes more than 95%
    of fluoride

    4

    Compatible with Phoenix
    Gravity Filter System

    stainless-steel

    Highest-grade
    stainless steel

    pos110_1
    purification

    Planet-friendly
    purification

    trust

    Fresh taste you
    can trust

    less waste

    Less waste, fewer
    refills, lower cost

    Why fluoride-free water?

    From skeletal fluorosis, a condition that weakens bones, to potential impacts on the thyroid and nervous system, the risks associated with fluoride ingestion are growing. Children are particularly vulnerable to fluoride's effects, with studies linking it to lower IQ and impaired cognitive development.
    It's crucial to be informed about the fluoride levels in your water supply. Phoenix Gravity POSTreat fluoride removal cartridges are designed to remove up to 95% of the fluoride in your water. Because we care about your health and the well-being of your family.

    Ready To Experience Water, As It Should Be?

    Complete Purchase

    FAQs

    Is the POSTtreat compatible with all gravity filters or just the Phoenix Gravity Filter?

    The POSTreat is compatible with all gravity filtration systems. Remember, it can’t be used alone - so you must have a gravity filtration system and existing Carbon Cartridge to use it.

    Can I set it up myself?

    Absolutely. The POSTtreat is designed for easy DIY set-up with your Phoenix Gravity System. 
    You simply attach your POSTtreat cartridges to the exposed thread of the Carbon Cartridges. We’ll send detailed assembly instructions with your POSTreat filter.

    Can I clean my POSTtreat Fluoride Filter?

    Yes, it’s simple! You can clean the stainless steel casing of the POSTreat filter - without the FluoRid media inside - in your home using tap water and a soft brush or mild abrasive. The FluoRid media itself will need to be replaced every 4 months. We’ll include detailed instructions when we send it to you.

    Still have a burning question? See our full FAQs here.

    The Phoenix difference, straight from the source(s).

    Customer Reviews

    Based on 817 reviews
    79%
    (645)
    17%
    (140)
    3%
    (25)
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    100.0
    S
    Sarah

    The difference in what my water now tastes like is incredible. Knowing that it doesn't contain so many of those nasties as well is so reassuring. 100% recommend.

    M
    Michael H

    My water had a strong chemical smell/taste, I never drank water for refreshment /hydration, now using the filter, I can't smell or taste anything but nice refreshing clean water . Would highly recommend 👌

    A
    Anonymous

    Great

    A
    Anonymous

    I am so pleased with my Phoenix Gravity Water Filter. It was quick and easy to assemble and the filtered water tastes amazing. Being in a hard water area, I've always struggled with drinking the tap water, so bought bottled water for years. I spent a long time researching which filter to buy and I am extremely happy with my purchase. The filtered water tastes so pure and my family can't believe how good it tastes. Brilliant product, highly recommend.

    B
    Brian Holmes

    Great product, great service, fast delivery.
    The area I live has a high mineral content and leaves residue on pans and limescale builds up in the kettle quickly, but not anymore.
    I thoroughly recommend this product , customer service is excellent and the filter looks quite stylish with the wooden stand. Buy one today you won't regret it.

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