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Rodi Water System Comparison - August 2025

4 Best Rodi Water System In the UK

1
Best Choice
9.7Exceptional
2
9.5Excellent
3
9.3Excellent
4
Best Value
9.2Excellent
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Model

Finerfilters 4 Stage Compact RODI Reverse Osmosis Filter System with DI Resin Stage for Aquariums, suitable for Tropical/Marine/Discus Fish etc. (50 GPD)
Model
Finest-Filters Reverse Osmosis RO Unit with Booster Pump and DI Stage Pumped 50-100gpd (50gpd)
Model
Geekpure 4-Stage Aquarium Countertop Reverse Osmosis Water Filter System with DI Filter-100GPD
Model
Filterelated 4-Stage Aquarium Reverse Osmosis System with Flushing Valve Portable RO+DI deionized Water Filtration,Colour Changing DI Filter,100GPD (4-Stage 100GPD)

Brand

Finerfilters
Brand
Finest Aquatics
Brand
Geekpure
Brand
Filterelated

Reviews

975 reviews
Reviews
57 reviews
Reviews
897 reviews
Reviews
-

Tech Specs

item weight

2.28 kg
item weight
-
item weight
1.32 kg
item weight
2.6 kg

customer reviews

4.5 4.5 out of 5 stars 325 ratings 4.5 out of 5 stars
customer reviews
4.4 4.4 out of 5 stars 19 ratings 4.4 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 299 ratings 4.3 out of 5 stars
customer reviews
-

batteries required

No
batteries required
-
batteries required
No
batteries required
No

special features

-
special features
Booster Pump, Automatic Membrane Back Flush, Pressure Gauge, High Pressure and Low Pressure Switch, DI Chamber with High Quality DI Resin
special features
Tankless
special features
Reduce TDS

color

-
color
Multicolor
color
white, blue
color
white

Available On

Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.7
    1
    Finerfilters

    Finerfilters 4 Stage Compact RODI Reverse Osmosis Filter System with DI Resin Stage for Aquariums, suitable for Tropical/Marine/Discus Fish etc. (50 GPD)

    Why we love it

    Compact size
    3 size options
    Removes 98 contaminants
    Main highlights
    • The RO membrane can last between 1 and 3 years depending on incoming water hardness, The pre-filters to be replaced every six months. DI resin to be changed when TDS begins to increase.
    • Reverse Osmosis is a technology that is used to remove the large majority (98%+) of contaminants from water. The reverse osmosis system works by pushing the water under pressure through a number of increasingly smaller filters and finally through a semi-permeable membrane essentially trapping all contaminants.
    • Please note: The system requires a minimum of 43 PSI or 3 Bar to work. Reverse Osmosis Systems Waste Water to make water, this is normal and the same with all RO systems, as this is the way the membrane rejects the impure water.
    • GPD = gallons of product water (approx) produced per day. Our quality 4 stage compact RO units come with all accessories required for immediate setup, allowing you to produce pure RO water at home!
    • Finerfilters 4 stage compact reverse osmosis RO system with DI resin filter. This unit is available in three different sizes (50GPD, 75GPD and 100GPD).
  • 9.5
    2
    Finest Aquatics

    Finest-Filters Reverse Osmosis RO Unit with Booster Pump and DI Stage Pumped 50-100gpd (50gpd)

    Why we love it

    Boosts water production efficiency.
    Reduces filter maintenance needs.
    Great for low-pressure water systems.
    Main highlights
    • he built in pressure gauge displays the water pressure (psi) to give piece of mind that the RO unit is working at the optimal water pressure.
    • This unit is available in three different sizes (50gpd, 75gpd and 100gpd). gpd = gallons of product water (approx) produced per day. Please select the required model from the drop down box above when ordering. The physical size of the units is the same, just the membranes are rated at different capacities.
    • These 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.
    • The built in booster pump ensures the optimal water pressure is supplied into the RO unit for the best rejection rate and water production speed, saving both time and water. The automatic flush unit will operate periodically and back flush the RO membrane. This will prolong the life of the filters, and eliminates the need to manually back flush the membrane.
    • The Finest-Filters 4 stage RO unit with booster pump is ideal for ultra pure water production in a range of applications, and especially in situations where the water pressure is too low for effective water production rate from an un-pumped system. This is a very advanced RO unit, with a built in booster pump, automatic membrane back flush, pressure gauge, high pressure and low pressure switch.
  • 9.3
    3
    Geekpure

    Geekpure 4-Stage Aquarium Countertop Reverse Osmosis Water Filter System with DI Filter-100GPD

    Why we love it

    Removes a wide range of contaminants.
    Suitable for various living spaces.
    Easy installation without professional help.
    Main highlights
    • Tankless and without faucet. This Unit is suitable for apartment, RV's, business travel, vacation, yacht, boat, mobil home or anywhere you need the pure water
    • System comes with quick connect fittings, color coded tubes, and installation manual for an easy DIY experience, No need professional installation, you can understand everything about your system and install it with our clear, well-organized instructions in a couple of hours
    • SMART SIZE - System Capacity 100 gallons per day @ 60 psi, it is around 260ml per minute. RO tube size: 1/4 inches. The ratio of pure water and waste water is 1:2. RO membrane is NSF certificated, to provide healthy and pure water. Quick Connections make it easy to remove and replace filters cartridges
    • Deionization Filter - Mixed bed DI filter is used to further reduce TDS from membrane filtered water. It is a high capacity mixed bed ion exchange resin, TDS value close to 0 ppm
    • 4 Stage Reverse Osmosis water filtration system - Filter Precision 0.0001 micron, Reduce arsenic, lead, fluoride, mercury, cadmium and more, Special design for your aquariums use or residential use

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When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

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