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Charterhouse Aquatics
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Collection: Reverse Osmosis

Reverse osmosis will purify water and remove salts and other impurities from your source water. Using good quality RO water is an essential foundation block and will get set your aquarium up for success from the start! 

Reverse osmosis will purify water and remove salts and other impurities from your source water. Using good quality RO water is an essential foundation block and will get set your aquarium up for success from the start! 

Read more...

RO Units

RO Sediment and Carbon Cartridges

DI Resins

RO Membranes

RO Tubing

TDS Meters

Home /Aquatics / Filtration / Reverse Osmosis
What Our Customers Are Saying About Us
Excellent
Based on 776 Reviews
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Angela Butland
May 24, 2025
Great service and product
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Anthony Lofthouse
May 24, 2025
used before fantastic service
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Mark Parnell
May 21, 2025
Ordered a juwel helialux spectrum light from Charterhouse Aquatics delivery was exactly to the time frame estimated i emailed for a quick progress update near the estimated delivery date and received a phone call and an email as confirmation delivery was on schedule I couldn't fault the service and quality of product once received these guys offer quality, efficiency and great all round customer service 😀 I will be using Charterhouse for future orders Very happy 😊
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Peter Sands-Moore
May 20, 2025
First class product, at a very competitive price.
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Dave Currie
May 18, 2025
Recieved ok not opened box yet as I am waiting for substrate and plants to set my tank up
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Gary Dolling
May 17, 2025
Super quick delivery
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david Tudor
May 15, 2025
Good selection, delivered accurately and quickly and as expected, thanks
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Rick Farr
May 14, 2025
Struggled getting live mysis from my normal supplier - a few click later and less than 24hrs later..... 7 bags of live mysis for my seahorses! Efficient, competitively priced and the slickest ordering to "boot" - to be honest I'm considering swapping over full time if my regular supplier lets me down again. Fab & would order again from Charterhouse Aquatics any day of the week!
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Paul Iremonger
May 14, 2025
Fantastic & quick service
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Nerayan Charles
May 13, 2025
Great service and delivery time
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Richie P
May 12, 2025
Had to change my order slightly. The guy I spoke to couldn’t have been more helpful. Delivery was on time, product was excellent. All in all a great experience and would definitely recommend.
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Debbie Smallwood
May 12, 2025
Brilliant. Will shooe here again. Thankyou
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Lee Clifford
May 12, 2025
It was a pleasure dealing with Charterhouse aquatics. The aquarium I purchased was great value for money and delivered in excellent condition on the date promised. Thank you 😊
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Holly Kennedy
May 11, 2025
Great service! Speedy delivery too!
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Gavin Grimshaw
May 11, 2025
Great item and service
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Kevin Jones
May 11, 2025
Delivers on time. Excellent service
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gary cornwall
May 7, 2025
Very good service even if imake a mistake
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Graham Leopard
May 4, 2025
Everything present and correct.
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Lindsey Dowson
May 3, 2025
Excellent company with super fast delivery on my new aquarium! Delivery driver very helpful also helping me get it into the house! I chose not to add middle door on the cabinet and add baskets this is not how the juwel Rio comes as standard & also I changed the bulb!
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Paul Cope
May 3, 2025
Online order. Everything was clear and easy to understand with ordering. Biomaster 2 was delivered quickly and well packaged. I did have a query over the piping. I called the contact line which was answered immediately 👍. The guy I spoke to solved my query straight away in simple A,B,C walkthrough step. Great experience and will be back. Paul

Why buy from Charterhouse?

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Free Shipping Over £50

Spend over £50 on your order and qualify for free shipping.

Flexible Payment Options

We offer flexible monthly finance options.

Charterhouse Points

As a thank you, we run the Charterhouse Points scheme.

Subscribe & Save

Takes the hassle out of regular ordering.

About Us

At Charterhouse Aquatics we stock the largest range of aquarium dry goods in the UK. We have full design, installation and maintenance services.

Address: 14 Merchant Drive, Mead Lane, Hertford, SG13 7AY

Telephone: 0203 697 3750
Company Number: 02872980
VAT Number: 854458301

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© 2025, Charterhouse Technology Ltd

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Modern Reef ION-X A 2L
Modern Reef ION-X A 2L
£33.59 £34.99
TMC V2 De-Ionising Resin 500ml
TMC V2 De-Ionising Resin 500ml
£19.67 £20.49
Aqua Medic Platinum Line Plus RO System
Aqua Medic Platinum Line Plus RO System
£477.53 £497.43
Charterhouse RO Carbon Filter and Sediment Cartridge Bundle
Charterhouse RO Carbon Filter and Sediment Cartridge Bundle
£9.31 £9.70
Charterhouse De-Ionising Resin - 1 litre
Charterhouse De-Ionising Resin - 1 litre
£19.15 £19.95
Korallen Zucht Hi Quality DI Resin 1L
Korallen Zucht Hi Quality DI Resin 1L
4 Reviews
£24.99
Charterhouse RO Carbon Filter Cartridge
Charterhouse RO Carbon Filter Cartridge
£6.19 £6.45
Tunze Tube Holder
Tunze Tube Holder
£10.28 £10.71
Charterhouse RO Sediment Filter Cartridge
Charterhouse RO Sediment Filter Cartridge
£3.12 £3.25
Charterhouse De-Ionising Resin - 2 litre
Charterhouse De-Ionising Resin - 2 litre
£28.75 £29.95
TMC V2Pure 100 Reverse Osmosis System
TMC V2Pure 100 Reverse Osmosis System
1 Review
£114.23 £118.99
1/4" RO Straight Connector
1/4" RO Straight Connector
£2.76
Reverse Osmosis Non return Check valve ( 90 degree )
Reverse Osmosis Non return Check valve ( 90 degree )
£2.29
Auto Aqua Titanium One Digital TDS Meter
Auto Aqua Titanium One Digital TDS Meter
1 Review
£22.07 £22.99
Auto Aqua Titanium S2 Dual Digital TDS Meter
Auto Aqua Titanium S2 Dual Digital TDS Meter
£37.43 £38.99
Reef Factory TDS Meter Plus
Reef Factory TDS Meter Plus
£71.40 £119
Vyair RO-50M 4-Stage 50 US GPD (185 Litres) Reverse Osmosis System
Vyair RO-50M 4-Stage 50 US GPD (185 Litres) Reverse Osmosis System
£100.30 £104.48
Vyair RO-100M 4-Stage 100 US GPD (375 Litres) Reverse Osmosis System
Vyair RO-100M 4-Stage 100 US GPD (375 Litres) Reverse Osmosis System
£105.59 £109.99
Vyair Compact 4-Stage 50gpd (185 Litres) Reverse Osmosis System
Vyair Compact 4-Stage 50gpd (185 Litres) Reverse Osmosis System
£46.71 £48.66
Vyair RO-50MP Pumped 4-Stage 50 US GPD (185 Litres) Reverse Osmosis System
Vyair RO-50MP Pumped 4-Stage 50 US GPD (185 Litres) Reverse Osmosis System
£136.05 £141.72
Vyair RO-100MP Pumped 4-Stage 100 US GPD (375 Litres) Reverse Osmosis System
Vyair RO-100MP Pumped 4-Stage 100 US GPD (375 Litres) Reverse Osmosis System
£156 £162.50
Vyair 10" Polypropylene PP Melt Blown Sediment Water Filter Cartridge - 5 Micron
Vyair 10" Polypropylene PP Melt Blown Sediment Water Filter Cartridge - 5 Micron
£1.90 £1.98
Vyair 50GPD RO Membrane
Vyair 50GPD RO Membrane
£20.86 £21.73
Vyair 10" CTO Block Activated Carbon Filter Cartridge
Vyair 10" CTO Block Activated Carbon Filter Cartridge
£6.20 £6.46
Vyair 75GPD RO Membrane
Vyair 75GPD RO Membrane
£25.18 £26.23
Vyair 100GPD RO Membrane
Vyair 100GPD RO Membrane
£30.17 £31.43
Vyair 150GPD RO Membrane
Vyair 150GPD RO Membrane
£37.01 £38.56
Vyair Handheld TDS Meter
Vyair Handheld TDS Meter
£19.91 £20.74
Vyair DM-1 Dual Inline TDS Meter
Vyair DM-1 Dual Inline TDS Meter
£24.91 £25.95
Vyair RO Tubing - Blue (1m)
Vyair RO Tubing - Blue (1m)
1 Review
£0.76 £0.80
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