FS301-DI Aquarium RO Unit

FS301-DI Aquarium RO Unit
(Code: FS301-DI) £114.00  
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Aquarium RO System with Built in Pressure Gauge and Deionization (DI) filters
Removes up to 99% of all impurities - including silicates - for a clean, clear aquarium

Aquarium RO system
Clean, pure water is a priority for all fish. No equipment is more effective in helping create ideal water conditions than Reverse Osmosis (RO) units. These units filter out up to 99% of chemicals found in tap water.
Our Aquarium RO Systems meet stringent standards. A wide variety of options ranging from economy 3-stage units to top of the line 5-stage RO/DI units are available to suit your exact needs.

Deionization (DI) filters
De-mineralize filter takes the full size RO to a higher level of filtration. It is an excellent selection for reef enthusiasts and other serious aquarists, especially those who live in areas with exceptionally high levels of phosphates in their tap water. Our unit includes: sediment pre-filters, carbon pre-filters and TFC (Thin Film Composite) membrane, Deionization (DI) post-filters in clear housings. The post deionizer takes the small percentage of contaminants that the membrane could not remove and filters this to greater than 99.99% pure. It will give you 0 ppm TDS, Conductivity attainable less than 0.1uS/cm or resistivity of close to 18 meg.ohm

DI Product Brochure 1 / DI Product Brochure 2 / DI Product Brochure 3

Build-in Pressure Gauge
The minimum operating pressure for a RO (reverse osmosis) unit is 50 psi (pounds per square inch). This unit build-in pressure gauge to monitor the operating pressure of the system. If the operating pressure is too low, an RO pressure boosting pump can be added to increase the operating pressure to the ideal range.

Why do I need RO water?
Tap water contains impurities that cause problems when added to an aquarium. These include phosphate, nitrate, chlorine, and various heavy metals. High levels of phosphate and nitrate fuel aggressive algae growth, and copper, often present in tap water due to leaching from pipes, is highly toxic to invertebrates. Because RO filters remove practically all of these impurities, they are essential for aquarists, particularly marine hobbyists. (please click here for more information)

  • Reverse Osmosis Technologies
  • Easy to Use and Store
  • Three Color Coded Tubing For System Connection.
  • Include Common Faucet Adaptor For Easy Installation.
  • 100% Factory Tested and Sterilized.
  • Include Installation Instruction.
  • Pressure Gauge
  • Deionization (DI) Filter.


Production: 50 GPD / 189 LPD
Minimum Operation pressure: 50 psi
Dimensions: (cm)28 (L) x 35 (H) x 15 (W) - system
Weight: 4.8 kg - system

Replacement Cartridge Filters - FS301-DI

(Stage 1) 5 Micron Sediment Filter:
It is effective in removing dirt, rust and sand particles.

(Stage 2) Carbon Block Filter:
It takes out 99% of the chlorine and organic chemicals. It provides enhanced reduction of taste, odour, and color. Protect and prolong the life of membrane.

(Stage 3) Reverse Osmosis Membrane:
A thin film composite (TFC) high quality membrane that processes 50 gallons per day. It removes the following hard water contaminants that may be present in your water: lead, cooper, barium, chromium, mercury, sodium, cadmium, fluoride, nitrite, nitrate, and selenium.

(Stage 4) Deionization (DI) Filter:
Produce 99.99% pure water by simply attaching this convenient deionization filter with RO unit. Convenient post RO filtration DI unit (RO/DI unit) provides crucial supplemental filtration to remove most impurities for pure polished product water. Excellent in areas with hard water. Produce 99.99% pure water. It will give you 0 ppm TDS, Conductivity attainable less than 0.1uS/cm or resistivity of close to 18 meg.ohm

Frequently Asked Questions

Replacement Filters for FS301-di Aquarium RO Unit

5 Micron Sediment Filter 10" 5 Micron Sediment Filter 10"
Carbon Block Filter 10" Carbon Block Filter 10"
50GPD TFC Membrane 50GPD TFC Membrane
De-ionization (DI) Filter Deionization (DI) Filter
TDS (Total Dissolved Solids) Meter TDS Meter
PH Test Meter PH Test Meter
3/4" Supply 'Y' Connection 3/4" Supply 'Y' Connection
3/4" Self Cutting Supply Tap 3/4" Self Cutting Supply Tap
John Guest - 3/4" Female BSP to 1/4" Pushfit Connection John Guest - 3/4" Female BSP to 1/4" Pushfit Connection