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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.
Ultra-Pure 4 Stage 50 Gallon Per Day RODI System
Ultra-Pure 4 Stage 50 Gallon Per Day Reverse Osmosis System
10,000.00 Grams
Calculated at checkout
Ultra-Pure 4 Stage 50 Gallon Per Day Reverse Osmosis System
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, car washing and many more applications requiring ultra-pure water. 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 almost 100% of tap water contaminants due to the additional full size deionisation stage.

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 700ml Deionisation Post-filter (resin included)
  • 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.

    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

    1. Far more substantial than I expected


      "Excellent product. Seems really well made and heavy duty. Never handled one of these systems before but looks and feels the business.

      RO membrane, with 2 pre-filters, achieving around 99% rejection. Zero TDS after DI cartridge.

      I now have RO water on tap for any purpose (especially my home brewery) and RO/DI water for my up and coming Reef Tank.

      Highly recommended.

    2. Great RO unit along with Super support


      "Having had difficulties keeping my nitrate levels down in marine tank, I concluded the RO water from my local fish shop was not very good. Certainly not the zero TDS I'm getting from this unit. Very easy to install after following the you tube videos posted by Osmotics. Wouldn't hesitate to recommend this item."

    3. Great product & excellent customer support


      "I'm made up with this system, which I purchased for my reef tank. Zero TDS like all the other reviews, and easy to install, but I did have a slight leak on the drain valve fast fitting. After a couple of emails to Osmotics, it was sorted - no fuss.

    4. 'Osmazing'


      "Third set up I've purchased . Same comments -TDS zero,easy to install - in general 100% good ."

    5. TDS Zero !


      "I incorporated a 'cut-off' valve and a 'storage tank'
      into the installation which was not clearly shown in the instructions, but with a little thought and approval from 'Osmotics' proved to be less of a problem than I thought.
      Worked perfectly returning a TDS reading of '0.00'!
      All connected autoclaves benefitting well.
      Very recommended, Thanks 'Osmotics'.

    6. easy set up


      "This product was very easy to set up,even for someone with no plumbing knowledge,like me.Great service with helping me through e-mails.Cant recommend highly enough,very pleased."

    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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    All trademarks acknowledged. All Rights Reserved.
    Registered in England and Wales, Company Number 5513539. VAT No: 897375652