Coldstream FTO Plus 4 Pack of 2.9" x 8" Ceramic Gravity Water Filter

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  • Buy 2 for £101.40 each and save 9%
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Coldstream FTO Plus 2.9" x 8" Ceramic Gravity Water Filter 4 pack of replacement filters

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4 pack of Coldstream FTO Plus 2.9" x 8" Ceramic Gravity Water Filter

The best gravity filter on the market today

Compatible with Doulton British Berkefeld and Big Berkey Housings

Reduces sodium fluoride to high levels 97% (see test data) without any additional filters

The best buy of all and MADE IN THE UK

2.9" diameter by 8" length for superior filtration and faster flow rates

Osmio Staff Pick as best Gravity Filter on the market

✓ Average pore diameter ~ 1 micron

The powerful ceramic gravity filter is compatible with all of the Doulton (British Berkefeld) and Big Berkey (and larger sizes) filter housings and makes a fantastic upgrade option as the filters have fantastic performance, particularly with regard to fluoride, hormone and pharmaceutical reduction in water. In other systems, such as the Doulton Super Sterasyl and Doulton ATC Super Sterasyl or the Berkey Black Elements, both of these require either the PF-4 or PF-2 Fluoride and Arsenic Filters (respectively) which take up space in the lower chamber which minimise the space available for storage of filtered water and adds cost to the process.

Superior Flow Rate and Filter Volume

The Coldstream filters are 1" longer and nearly 1" wider and therefore not only contain more filter media resulting in superior filtration, but also much faster flow rates. See how the filters compare in size to the Doulton Gravity Filters:

Water Filters Made in Britain

Installation Video

NSF 42 Certified Components - which guarantees materials are not extracted at all into the filtered water. Despite rumours put about my competitors - this product does not contain BONE CHAR

Disposing of used filters

The filter would need to be smashed the ceramic and media inside should go to rubbish and the plastic ends can be recycled as plastic. Some people use the media and ceramic to compost but I don't because they can have pharmaceutical and hormone traces and I grow food so I would not want that. For the media, it would be best to send that stuff to the landfill.

More Information
ModelColdstream FTO Plus 4 Pack of FTO+ 2.9" x 8" Ceramic Gravity Water Filter
In DepthDespite rumours put about by competitors - this product does not contain BONE CHAR

Contaminant removal

• Bacteria removal (Klebsiella Terrigena) - 99.9999%
• Cyst removal (Cryptosporidium / Giardia) - 99.9999%
• Volatile Organic Contaminants – 94% - 99%
• Lead, Cadmium, Selenium, Zinc removal – 100%
• Heavy Metal Contaminants (to NSF 53c)
• Pesticide Contaminants – 99.9%
• Herbicide Contaminants – 99.9%
• Free Chlorine Removal (Chlorine Taste and Odour) – 99.9%
• Chloramine Removal – 97%
• Fluoride removal – 90.0%


• Flow Rate – 1.0 L/hr
• Operating Temperature - min 5°C / max 30°C
• Service Life - 6 months (recommended)

Critical Dimensions per filter

• Diameter – 2.9”
• Length – 8.0”
• Fitting type – ¼” BSP
• Fitting length – LM (26mm)

This superb gravity filter is compatible with the Doulton (British Berkefeld) filter housing, Propur Big and King and the Big Berkey Housing.

NSF 42 Certified - which guarantees materials are not extracted at all into the filtered water.

The plastic is recyclable ABS plastic
Filter ParameterBacteria, E-coli, Chlorine, Sediments, Nitrates, Fluoride, Hormones, Pharmaceuticals, Heavy Metals
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Product Questions

I live in an area with quite bad water quality, will the filters last 6 months and are there any signs to say to change them? Ive had mine 5 months and they yellowing. Thanks
Question by: Karen on 3 Nov 2022, 09:38
Surface can get discolored over time - this would not affect the performance. If you use more than 7.5 L daily you may consider changing filters earlier than 6 months.
Answer by: Irina Orlenko (Admin) on 3 Nov 2022, 14:59
Can you confirm the filters do not contain aluminium?
Question by: Amy Winchester-Daw on 24 Sep 2021, 12:16
Aluminium is not used in the production of these filters.
Answer by: Irina Orlenko on 2 Oct 2021, 12:33
I have purchased the Coldstream filters and the last two orders have been exceptionally poor quality. There is a strong chemical smell, the glue is visible and not finished properly and the filling leaks out. Is there another filter that can be used with the Osmio Gravity?
Question by: Leon on 13 Aug 2023, 14:12
Hi Leon - Coldstream had a recent bad batch and we have been replacing those filters for customers. Please can you send pictures of them and we will file a warranty claim, please email or call us.
Answer by: Mark Kent (Admin) on 14 Aug 2023, 09:25
I have a Big Berkey, are two filters enough? Also I have seen an answer about bad batches, has this problem now been dealt with?
Question by: Pauline Griffiths on 20 Sep 2023, 18:28
Enough for what? I think every filter manufacturer in the world has had a batch production problem before, this is not uncommon.
Answer by: Mark Kent (Admin) on 21 Sep 2023, 09:36
Hi I have a big berkey. Do i use the gravity water filters with the black berkey filters? As you would use the white flouride berkey filters? Thanks
Question by: Romina on 16 Apr 2022, 07:13
You can use these filters in Big Berkey system. These filters achieve fluoride reduction without the need of additional filters. You need to install them instead black elements in top chamber.
Answer by: Irina Orlenko (Admin) on 18 Apr 2022, 22:57