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Osmotics Water Filters are fast becoming the leading brand within the water filtration industry. Our water filters and Reverse Osmosis systems improve water taste and quality by reducing impurities.
4 Stage 50 Gallon Per Day Reverse Osmosis System with DI
4 Stage 50 Gallon Per Day Reverse Osmosis System with DI
7,500.00 Grams
Calculated at checkout
4 Stage 50 Gallon Per Day Reverse Osmosis System with DI
Water Pressure Gauge
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Product Description

A full size 50 Gallon Per Day Reverse Osmosis system with Deionisation stage which is ideal for aquariums, window cleaning and car washing. Now with Free pressure gauge as standard.

This full size system has superior pre-filtration due to its large 10inch filters and also includes a membrane flush system which reduces membrane fouling thereby extending life.

This RO system will remove upto 99% of tap water contaminants.

The Osmotics RO system includes:-

  • 1 x 50 US gallon per day membrane
  • 1 x 5 micron Sediment Pre-filter
  • 1 x Carbon Block Pre-filter
  • 1 x 330ml Refillable Deionisation Post Filter (resin included for 2 fills)
  • 1 x Feed Water Clamp
  • 1 x Waste Water Clamp
  • 1 x Filter Housing Wrench
  • 2 Metres of Red Tubing
  • 2 Metres of Green Tubing
  • 2 Metres of Blue Tubing
  • 1 x Membrane Flush Kit *
  • 1 x Pressure Gauge

  • * Using the flush valve regularly increases membrane life.

    All Osmotics Reverse Osmosis Systems are shipped fully assembled complete with comprehensive instruction manuals and have the added benefit of email support round the clock.

    The effectiveness and productivity of RO systems increases with greater water pressure and temperature. The actual flow rate (in GPD) of any reverse osmosis system depends on your home water pressure and temperature.

    While manufacturers state that 60 psi is required at the membrane for full production, we know that not everyone's cold water is at 60 psi and 77 degrees F therefore, we remind you that you might get less than 50 GPD, perhaps 50% or even less if your pressure and temperature are very low!

    So when flow rate is critical for you, you need to consider all these factors.


    All RO units should have their prefilters changed every 6 months or 2500gallons throughput, whichever comes sooner. The prefilters protect the membrane from sediment and chlorine which will damage the most expensive element. The filter replacement kit for this unit can be ordered from <here>


    The Deionisation stage may need refilling more regularly than the prefilters, it depends entirely on how your unit is performing and how much water you produce. Loose Deionisation Resin for this unit can be ordered from the <here> in 1,5,10 and 25 litre quantities.

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    Product Reviews

    Showing reviews 1-10 of 15 | Next

    1. First time to use a reverse osmosis system and I made a very good choice.


      "What can I say about the product. It's perfect for my needs. It was east to install and moat important to me that it was easy to make it a portable system that I can connect to the tap, hose outside, washing machine pipe with some bits and pieces that you'll find here on the website. Make sure you have a minimun of 60 psi water flow to work with you system the only mini problem that I had but I got a booster pump from them witch fixed my problem and now I have 25l of water in 2 hours and 15 mins :) awesome! And the customer service is amazing and responds quickly ! Defenetly get it."

    2. Great unit


      "I ordered this unit on 2015 and still going good, need to change filters though.I use it for my reef tank without pump,slow water flow due to UK pressure, but does the job great, zero reading in the TD meter. Very happy with the unit, just ordered a 150Gl unit."

    3. RO System with DI for Reef Aquarium


      "I purchased this primarily for producing water for a marine reef aquarium as the quality of my tap water was poor in respect of some contaminants (phosphate in particular). The RO system arrived quickly via Interlink. The instructions were clear and I had the system installed under the kitchen sink in no time. Quite happily producing high-quality water. I Will probably invest in an auto-flush valve, pressure vessel, auto shut-off valve and tap at some point in the future. Highly recommended."

    4. Does what it says on the box!!


      "Brought this for my partner to help save money!! No more excuses for 'popping to LFS' for water...and come back having spent a small fortune on other bits. Apart from one flood due to not tightening the connections, it's working really well. The water comes out exactly as it should and it's an easy process to just add salt and go. Would recommend to anyone who has the space and wants a longer term solution for their tank water. "

    5. My 1st RODI


      "Bought this unit to gain more control over the water going into my marine aquarium. Apart from the a pipe blowing off (pressure gauge) and soaking me the install went very easily. Once setup and producing water at 0 tds I found it very slow (5 hours for 25 litres), so checked the water pressure and it was only 35 psi, so had to buy the additional booster pump. I'm now getting 100 psi and got 10 litres in 50 minutes. Much better now."

    6. great product. 0 tds from very hard water


      "Ro unit arrived in good time.
      Found pressure gauge broken off so sent email on same evening and got a reply 6.30 the next morning. New part arrived the next day. Great customer service!
      Used the unit for marine aquarium water and got a reading of 0 tds from tapwater originally at 402ppm.

    7. great solid product


      "I purchased this product to collect the water for my discus tank. I can collect 50L for my weekly waterchange in about 6-7 hours. This unit performs very well with zero tds readings. It is very easy to install because it comes pre-installed by manufacturer. I also bought 3 ball valves to make my system portable. Great added bonus with membrane flush valve and pressure gauge make it very easy maintained.
      Great product, very happy with purchase.

    8. Super little money saver


      "Cracking little unit, I am not doing weekly water changes on my tank and the unit has already paid for itself. Would recommend it to anyone. Consider the booster pump also to get the most from your unit and minimise waste water, hope this helps you decide if unsure what to get."

    9. excellent product


      "Purchased this to make water for window cleaning my own windows with water fed pole.it makes more than enough,wife uses it for steam iron and reptiles, easy to plumb in."

    10. Fantastic product


      "I brought this product for my marine tank as my fish store ro water wasn't good quality. This ro unit gives me 0 tds which is exactly what I wanted. It's so easy to use no need to build anything, just follow the setup instructions but I do have to say the instructions are not the clearest, but overall I'm very happy with the product and it's worth every penny."

    Showing reviews 1-10 of 15 | Next

    What is Reverse Osmosis?

    Reverse osmosis (RO) is a filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side.

    Reverse osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other substances from the water molecules.

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