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POSTreat FluoRid Media Refill

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

    Removes more than95% of fluoride

  • Housed in highest-grade stainless steel

    Housed in highest-grade stainless steel

  • Perfectly compatible with Phoenix Gravity Filter System

  • Less waste, fewer refills, lower cost

  • 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.

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.
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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Go one step further for fluoride removal:
Go one step further for fluoride removal:
Shop now

Filtration At Its Finest

Removes more than 95%of fluoride

Compatible with PhoenixGravity Filter System

Highest-gradestainless steel

Planet-friendly purification

Fresh taste you can trust

Less waste, fewerrefills, lower cost

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).