The BOROUX Proactive Fluoride Filter is an add-on filter designed to reduce up to 99% of fluoride from your drinking water. It uses an alumina-free, dual-layer nano-carbon filtration system with a patent-pending upflow design that increases contact time for more effective filtration. Each pair filters up to 1,000 gallons of water and is housed in durable stainless steel shells for long-lasting use. These filters attach to compatible upper chamber filters, including BOROUX Foundation™ Filters and Black Berkey® Elements, and are installed in the lower chamber of your gravity water filtration system.
What's Included
The BOROUX Proactive Fluoride Filter is an add-on filter located in the lower chamber and must be attached to a filter housed in the upper chamber.
Compatible filters:
Compatible filter systems:
Whether it's replacing your existing Berkey® PF-2® Fluoride Elements or initiating a new journey, the filters have been crafted for safe fluoride reduction.
Industry-leading removal rate using innovative aluminum-free technology
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Long-lasting performance for 6-12 months of clean water
Hybrid nano-carbon technology for superior filtration
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Safe filtration without aluminum risks, guaranteed.
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Experience superior water filtration with our innovative two-stage system. The BOROUX Proactive Fluoride Filter works in perfect harmony with the BOROUX Foundation Filter to deliver exceptionally clean water.
According to the Fluoride Action Network, ~95% of the reporting domestic water suppliers in the US have fluoride levels of 0.7 parts per million or less.
Filter Capacity |
Up to 1,000 gallons per pair, depending on the quality of the influent water.¹ |
Dimensions |
2.67” x 2.67” x 7” |
Composition |
Filters are comprised of a specialized blend of activated carbon specifically formulated to address fluoride. |
Compatibility |
Compatible filters:
Compatible filter systems:
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Warranty Coverage |
The filter media is covered by a 6-month limited warranty, which includes defects in materials or performance under normal use conditions. The stainless steel shell is backed by a lifetime warranty against defects in material and workmanship. |
Maintenance |
We recommend cleaning the shells of the fluoride filter monthly. Since the water running through the Proactive Filter is pre-filtered, there is no need to clean the filters. Reprime the filters if you experience a reduced flow. |
Replacement Filter |
BOROUX Proactive Fluoride Filter / Model BX·F·2 |
Box Includes |
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¹ - Based on independent testing for the reduction of fluoride at 1,000 gallons per set of filters. While testing was performed under standard laboratory conditions, actual performance may vary. Filter performance may vary based on local water conditions.
This product is not yet available for California and Iowa residents.
When first using Boroux Fluoride Filters, it's pretty common to experience a slight earthy or mineral taste at first. This usually goes away after you prime the filters for about 5 minutes using the blue filter primer or 2 cycles with the automatic priming pump with hot water (around 100°F). Using the blue priming tool and higher water pressure can also help improve the taste.
Yes, our BOROUX Proactive Fluoride Filters are designed to be fully compatible with Berkey® systems. They attach directly to the lower chamber of most standard gravity-fed filtration units. This allows you to continue using your existing setup while benefiting from BOROUX’s advanced fluoride-reducing technology.
However, we always recommend confirming thread size and chamber fit for your specific model to ensure seamless installation. If you need help determining compatibility, our team is here to assist!
Yes, the stainless steel shell is essential for proper performance. It supports our upflow design, which directs water from the bottom up—slowing the flow rate and increasing contact time between water and filtration media. This optimized interaction enhances fluoride reduction and overall effectiveness.
Yes, you'll need one BOROUX Proactive Fluoride Filter for each BOROUX Foundation Filter in your system. The Proactive Fluoride Filters are designed as a 1-to-1 companion product, meaning each fluoride filter connects directly to one Foundation™ Filter.
This ensures balanced flow, proper filtration performance, and maximized fluoride reduction across your entire system.
BOROUX Proactive Fluoride Filters are not available to ship to California or Iowa due to state-specific regulations and compliance requirements. These states have unique laws regarding the sale of water filtration products that make certain contaminant reduction claims.
We're actively working to meet the necessary certification standards so we can make these filters available to residents in both states in the future.
The BOROUX Proactive Fluoride Filter attaches to the stem of the BOROUX Foundation Filter and is suspended in the lower chamber.
The water passes through the BOROUX Foundation Filter. Then water first comes in contact with the granulated carbon in the inner layer of the fluoride filters.
Then, the water filters through the nano-carbon outer layer. The upflow design of the stainless steel shell, makes the water stay in contact with the outer layer for a prolonged period of time, providing superior filtration.
The filtered water exits the top of stainless steel shell through the outlet holes and into the lower chamber.
