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O2 Grow 2120 Oxygen Diffuser, 120 Gallon Capacity - Two Emitters

Out of stock
120 gallon capacity - 60 gallons per emitter. Deliver 50% more dissolved oxygen than air stones. University tests average 20% increase in yields. Improves nutrient uptake at the root.

O2 Grow 2120 Oxygen Diffuser, 120 Gallon Capacity - Two Emitters

120 Gallon Capacity - 60 Gallons per Emitter

  • Deliver 50% more dissolved oxygen than air stones
  • University tests average 20% increase in yields
  • Minimal energy required to operate
  • Improves nutrient uptake at the root
  • Does not heat water
  • Activates microbes
  • Deter root disease
  • Makes NO NOISE!

Why Use O2 Grow Products?

  • Increased oxygen to the root zone has shown to increase the speed of plant growth, size of the root ball, number and size of flowers, and nutrient uptake.
  • Oxygen is a vital component for activating microbes, and will reduce brewing time when when making compost teas.
  • It's well documented that oxygen is needed to help balance pH, prevent root disease and ultimately increase yield.
  • Bubblers and venturis are inefficient at raising the dissolved oxygen level (ppm) in water. Bubblers and venturis simply "blow" air through the water and will raise the water temperature to match the surrounding air.
  • The O2 Grow patented technology elevates the dissolved oxygen levels 50% more than bubblers via electrolysis without increasing the temperature of your water.
  • The O2 Grow technology actually "manufactures" 100% pure oxygen from the water molecule, by separating the hydrogen and oxygen into gas.

What Makes O2 Grow Special?

The patented nano bubble technology behind O2 Grow allows you to maximize oxygen supplementation through a process known as electrolysis. O2 Grow works by taking advantage of the electrolysis cycle at a molecular level, separating the oxygen from hydrogen when electric current passes through an ion-containing solution or a liquid, such as water.

As an air stone alternative, O2 Grow helps increase your nutrient uptake by delivering 50% more dissolved oxygen than traditional air stones. In fact, O2 Grow’s products can increase oxygen saturation for indoor and outdoor growing methods such as: deep water culture, drain to waste or surface watering.

Why Choose O2 Grow?

O2 Grow is dedicated to providing affordable oxygen alternatives to air stones or bubblers that save you energy, increase yields, and deliver more nutrients to your crop’s roots. with minimal maintenance and low energy consumption. O2 Grow's products, with Solid State Technology, will last thousands of hours.

Nourish Roots with Less Energy

Water in closed reservoirs typically lacks the necessary oxygen to provide the roots enough nourishment to grow plants. Air stones and oxygen bubblers try to solve this problem but involve many moving parts, noisy operation and high wattage.

Alternatively, the O2 Grow products use only a few watts of power per hour while safely delivering pure oxygen into the reservoir with electricity, which in an energy-efficient age is essential. This process is superior to using air stones since you get more oxygen with no motors and no moving parts that could potentially go awry.

In addition to being more energy-efficient, O2 Grow delivers more dissolved oxygen, increases your yields, activates beneficial microbes, and improves the uptake of critical nutrients to the root structure.

Electrolysis vs Aeration:

These two methods will both increase the levels of dissolved oxygen in the water. The biggest difference between the two is in the percentage of saturation that can be achieved.

The electrolysis method, which is the patented process of O2 Grow , can deliver 50% or more dissolved oxygen than a bubbler. A bubbler uses the oxygen from the environment which is pumped through the water with a stone or diffuser. The air bubbles will float to the surface and burst. Some of the oxygen is absorbed into the water, but the level of dissolved oxygen will be limited to the level of oxygen in the air. With the O2 Grow electrolysis process, the hydrogen and oxygen are actually separated from the water molecule. The electrolysis process creates nano bubbles.

The nano bubbles of hydrogen rise to the surface and burst, while the oxygen bubbles are easily absorbed back into the water effectively super saturating the water with oxygen. Because the process creates the oxygen molecules from the water molecule itself, there is no real limitation and a much higher level of dissolved oxygen can be achieved. Additionally, the electrolysis technology utilizes a very economical low voltage process and does not impact the temperature or pH of the water being oxygenated.

The Importance of Increasing Levels of Dissolved Oxygen:

Dissolved oxygen (DO) refers to the amount of oxygen that is contained in solution. The amount of oxygen that can be held by water may be influenced by water temperature, salinity, and pressure.

The concentration of dissolved oxygen in water is expressed in milligrams per liter (mg O2/L), parts per million (ppm), or percentage saturation (%O2). Dissolved oxygen levels are considered most important and commonly employed measurement of water quality as well as ability to sustain plants or aquatic life.

Increased levels of dissolved oxygen in water will noticeably increase plant yields, benefit root growth allowing for nutrients to be more readily absorbed, and significantly reduce root diseases such as Pythium which typically thrive in oxygen-poor (anaerobic) environments.

HoH molecule - anode pulls hydrogen with arrow pointing up, cathode pulls oxygen with arrow pointing down

Quick Instructions:

O2 Grow units are basically plug and play. Simply remove the unit from the package, connect the emitter to the power supply and then connect the power supply to the control box. Then, plug the power supply into the wall outlet. You should see a green light on the control box. The unit is now ready and the emitter can be placed into water. Once the emitter comes in contact with the water or the nutrient solution, this will complete the electronic circuit and the emitter will begin emitting bubbles.

If you do not see bubbles, make sure that your water has some electrolyte in it. If you are using reverse osmosis water or purified water, you will need to add some nutrient to make the emitters work.

The best method for oxygenating your water is to run the unit just before watering your plants, or on a timed cycle to boost oxygen if you are growing in a hydroponic method.

Emitter Maintenance:

O2 Grow Emitters will require cleaning from time to time. Over time, the Emitter may get a calcium build up from the water. A quick rinse in a dilution of muriatic acid will remove the build up from the screens. Properly maintaining your screens will prolong the life of the Emitter.

Technology Platform

Patents: 7,396,441 – 7,670,495 – 6,689,262 – 8,157,972

The patented dissolved oxygen generator technology used in these experiments generates extremely high levels of dissolved oxygen in water for surface watering, hydroponic and other applications. This science will be especially helpful with farms with low dissolved oxygen in well water.

O2 Grow Emitters:

  • Deliver 50% more dissolved oxygen than air stones
  • Do not warm water like bubblers
  • Use no moving parts or motors to wear out
  • Use less power... 6 WATTS per hour
  • Protect from root disease
  • Improve nutrient uptake
  • Activate microbes
  • Essential for compost tea brewing

Product Specifications:

Item Number: 2120
Contents: Heavy Duty Control Box with Power Supply and Cooling Fans, (2) Titanium Emitters
Capacity: 120 Gallon / 454 Liter
Electrical Usage: 144 Watts @ 120V
Product Size: Emitter: 6in x 9in x .75in, Control Box: 9in x 8in x 4in, Emitter Cord Length: 8ft each


When watering plants in soil, you will want to oxygenate your nutrient water just before pouring on plants.


For wicking systems, you will want to oxygenate your nutrient water on a schedule. Use a timer to boost oxygen every 3-4 hours.

Ebb & Flow

In Ebb & Flow systems, it is best to oxygenate the nutrient water on a schedule. Set your timer to oxygenate just prior to flooding the tray.

Deep Water Culture

In Deep Water Culture systems, you will want to oxygenate your nutrient water on a schedule. Use a timer to boost your oxygen every 3-4 hours.

Drip / Top-Water

In Drip or Top Water systems, it is best to oxygenate the nutrient water just prior to your scheduled watering.

Aeroponic / Cloner

For Aeroponic or Cloner systems, you will want to oxygenate your nutrient water on a schedule. Use a timer to boost oxygen every 3-4 hours.
More Information
SKU h_ap_055
UPC 086450400072