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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 75 Gallon Per Day RO System
Ultra-Pure 4 Stage 75 Gallon Per Day Reverse Osmosis System
10,000.00 Grams
Calculated at checkout
Ultra-Pure 4 Stage 75 Gallon Per Day Reverse Osmosis System
Water Pressure Gauge
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Product Description

A full size 75 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 75 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 75 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. Quality goods, prompt delivery – Rating 5

      Posted by Trevor Knightsmith7-05-2015

      Bought this to replace my old unit.

      Much better quality, and very easy to set up. Just remember to take the wrapping off the filters first (unlike me !)

      Would definitely recommend .

      Have also dealt with the company in the past for filters and connections.

      Well pleased

    2. Excellent advice – Rating 5

      Posted by Terry w14-03-2015

      my first ro rig received excellent advice on what I needed and delivered on time said very good email help got me up and running

    3. No more LFS RO WATER reading 40 TDS – Rating 5

      Posted by klynn 13-10-2014

      Was using LFS for awhile and was very unsure about what I was putting in my reef tank plus high reading too..glad I got this system, my own time and saves a lot of bucks in long run, great customer service too from osmotics. Will be returning in future for the filter pack which looks good value for money.
      Many thanks

    4. Great piece of kit – Rating 5

      Posted by Chris 23-12-2013

      Easy to set up and run. Produces zero TDS fast.

    5. Excellent! – Rating 5

      Posted by AVD6-04-2013

      This unit is very well built, it feels really sturdy.It was very easy to set up and as I also purchased the inline TDS meter I can see my RO water has a very important 0 TDS. I'm very pleased with my purchase.

    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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