GrowoniX EX800-HF - 870 GPD Reverse Osmosis Filtration System with Tall Filters

GrowoniX EX800-HF - 870 GPD Reverse Osmosis Filtration System with Tall Filters


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$619.95 - $649.95

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GrowoniX Product Documents

GrowoniX EX800 Instructions

The Growonix EX800-HFT is designed to flow 36.5 gallons per hour of pure RO water with an astounding 1:1 ratio - High flow rates and water savings never before seen in a package so affordable and durable. Utilizing the best membrane technology in the world (98.5% rejection), wrapped in our EX Series patented bracketing system, our premier flagship is a mobile powerhouse. A pair of liquid-filled stainless steel pressure gauges informs when it's time to change the pre-filters. A manual flush valve allows you to clean the membrane, purging out pollutants that could otherwise add buildup to the system. Flushing adds considerable life to the membrane as well.

    Growonix EX800 Systems Features:
  • 800 Gallon Per Day System
  • 34 Gallons Per Hour
  • Up to 1:1 System Ratio
  • High Flow Cold Water Membrane
  • High Flow Sediment Filter
  • Spun Sediment Filter For Extreme Dirt Filtering Capacity
  • Patented Metal Housing
  • Stainless Steel Liquid Filled Pressure Gauges
  • Auto Shutoff Valve
  • EZ Hookup Kit
  • Wall Mountable
  • Uses 50% Less Water Than Traditional RO Systems

Optional KDF85 Carbon Filter Upgrade

For chlorine and chloramines reduction for city water . Also for well water for iron, hydrogen sulfide, and heavy metals reduction. Will last TWO TIMES AS LONG as the standard green carbon filter. Prolongs the life of the membranes. Reduces chloramines, chlorine, iron, sulfur and heavy metals. Bacteriostatic qualities do not allow microbes to breed in filter.

The EX Series is designed to flow 33 GPH, (Gallons Per Hour) at almost 0 ppm RO water, with a 1:1 system ratio (with feed water under 300 ppm), and a 2:1 ratio (with feed water over 300 ppm). It's affordable, durable, and reliable. It ourflows all other RO's in its class, with all the quality you would expect from a GrowoniX product

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. This filtering process ensures that the solute (waste water) is contained within the pressurized chamber while the pure solvent (RO water) is allowed to pass freely through the membrane.

Product Q&A

GrowoniX EX800-HF - 870 GPD Reverse Osmosis Filtration System with Tall Filters Questions & Answers


How does water temperature effect flow rates through RO filters?
Between 77° and 50° water system production declines by 50%, as cold water is more dense, more viscous, and more difficult to move through the membranes.

What can be done to combat the effects of cold water on RO membranes?
Increasing the water pressure with a booster pump. Increasing the feed water temperature, which some people do by mixing warm and cold water from a diverter valve.


Does the system ratio (waste ratio) change over time?
System ratios can change over time if the flow restrictor starts clogging due to hard feed water conditions.

Does the system ratio change with water temperature?
System ratios (waste ratios) can drift with cold feed water. Water travels the path of least resistance — the drain line! It’s important to check the system ratio during the winter months and adjust if necessary.

How can the system ratio be adjusted?
System ratios can be tuned with a ball valve or Flow Box. Never go lower than the system was intended for.


How much water pressure is needed to run an RO system properly?
RO membranes require 40 psi of incoming pressure to produce even a drop of water except our GXM200-HF which requires only 20PSI. The only membrane on the planet that can do this.

What’s the maximum feed water pressure that an RO system should run on?
Incoming feed water pressure on all water filters, always and everywhere, should be no more than 80psi. Plastic filter housings cannot handle more pressure.


Can all GrowoniX water filters be used with well water?
Well water is generally too dirty for small RO membranes (100GPD through 400GPD systems). The large 4” membranes of the bigger systems (600GPD and larger) are recommended for well water treatment, unless the water demand is really low.

Are there any special filters needed to treat well water?
KDF85/ catalytic carbon filters are a must for well water treatment. This premium catalytic carbon filter with a bed of KDF85 media can reduce iron, hydrogen sulfide, heavy metals, and bacteria—all things that wreak havoc on RO components—especially membranes. Other consideration for special filters can only be deduced with a laboratory water analysis.

Does GrowoniX help with well water analysis?
They do. Just send Growonix your water analysis and they will look at it for free. If you don’t have a recent analysis, you can either use a local water lab, or purchase a test kit through GrowoniX send it off to our partner lab.

Tech Specs