The Best Air Stones for Hydroponics Reviewed

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by Miles Graham | Updated: February 26, 2019

Air stones are incredibly useful for helping diffuse air into your hydroponics system.

In this post, we take a look at the best air stones for hydroponics systems along with giving you some helpful tips for using them in your setup.

But first, our top picks

Best Air Stones for Hydroponics

Below we’ve reviewed 4 of the best air stones for hydroponic and rated each based on ease of use, value for money, reliability and function.

1. Pawfly 2-Inch Cylinder Diffusers

Pawfly have a long history of producing aquarium products that are both highly functional and versatile.

The Pawfly Air Stones Cylinder Bubble Diffusers are no different.

Made from high quality non-toxic mineral materials, these cylinder bubble diffusers are designed to create tiny, evenly sized bubbles rather than a few large ones.

While some users have found them to be on the smaller side, the fact you get four in a pack means you can space them out and get a more even spread of bubbles. We also really like that they produce even bubbles meaning I can count on them being consistent.

The Best Air Stones for Hydroponics Reviewed 4

KEY FEATURES

ShapeCylinder
Jetting Volume3 L/min
Pump Power Needed3 – 6W
Soaking Time1 Hour

PROS

  • Great size
  • Great airflow
  • Easy to clean

CONS

  • Some users find them to be a little on the small side.

2. Pawfly ASV100 Diffuser

If you like the sound of Pawfly ASC100 but need a little more jetting volume then you’ll certainly want to consider the Pawfly ASV100!

The 4 inch air stones do a fantastic job of oxygenating the air in your hydroponics setup and produce evenly sized small bubbles – exactly what you need to help with nutrient uptake.

The ASV100 can pump out upto 12 liters a minute but remember, the bigger the oxygen output the bigger the pump needed.

For us, the Pawfly ASV100 are really up there with the best air stones for hydroponics.

The Best Air Stones for Hydroponics Reviewed 5

KEY FEATURES

ShapeDisc
Jetting Volume12 L/min
Pump Power Needed6 – 8W
Soaking Time1 Hour

PROS

  • Large surface area creates a consistent bubble output
  • Suction cups do a great job of keeping the stone in place
  • Excellent value for money.

CONS

  • As with all air stones, the bubbles become “thicker” over time.

3. Yueton Cylinder Air Stones

Fun fact, when I use to keep fish I used the Yueton Cylinder Air Stones in my aquariums.

Initially I was skeptical that they’d work for hydroponics but after testing them out with a 12 hole setup I was pleased with the results.

While the bubbles are a little larger than those produced by the Pawfly ASC100, they are a great alternative choice.

Perfect for smaller setups, these Yueton Cylinder air stones are a great alternative if you aren’t a fan of the Pawfly brand.

The Best Air Stones for Hydroponics Reviewed 6

KEY FEATURES

ShapeCylinder
Jetting Volume
Pump Power Needed2 – 4W
Soaking Time1 Hour

PROS

  • Ideal for small setups
  • Fit neatly into most systems
  • Great quality

CONS

  • A bit noisier than other items

What Are Air Stones?

Best air stones for hydroponics

Air stones are small devices that sit in the bottom of your water tank to help put extra oxygen into the water.

To do this, the air stone is attached via a tube to an air pump which sits outside of the tank.

Many growers use air stones to help diffuse the oxygen better that what a tube could.

How Are Air Stones Used In Hydroponics?

Air stones are commonly used in hydroponic setups to help oxygenate the plant root zones. This is important as without oxygenated water, your plants roots can’t properly take up enough nutrients to grow to their maximum potential.

What you’ll also find is that roots sitting in a solution lacking sufficient oxygen will develop root rot caused by plant pathogens.

So, by using air stones you give your plant roots enough oxygen to properly take up nutrients.

The Bottom Line

So there you have it, 4 of the best air stones for hydroponics.

Resources Referenced In This Post

Hi I'm Miles and I'm one of the team behind Gardeem.com.
Besides being a passionate grower and writer, I'm a husband, father and a grandfather to three! I started Gardeem in 2017 with the single goal of providing simple and reliable gardening advice to everyone no matter their ability levels.

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