Barley Straw Extract 20L

Barley Straw Extract 20L

$304.55 $258.86

Aquatic Barley Straw Extract: The Natural Fix for Algae Growth in Water Features, Fountains, Garden Water Tanks, Small Fish Ponds, Large outdoor ponds and small dams.

  • Prevent new algal growth while suppressing existing algae
  • Fast-acting
  • Simple and easy to use


Aquatic Barley Straw Extract is a powerful and eco-friendly product that lets you control the growth of new algae in bodies of water. From small ponds to large ponds, fountains to water features and more, Aquatic Barley Straw Extract helps you limit new algae growth in a way that’s quick to deliver and highly reliable.

Available in a convenient bottle that’s easy to store and simple to use, this trusted Aquatic Barley Straw Extract is a time-tested natural product that can make or break the perfect pond.

What is Barley Straw Extract?

Aquatic Barley Straw Extract is a super-concentrated liquid made from whole barley straw. With an incredibly easy method of delivery and high concentration, Aquatic Barley Straw Extract limits the growth of new algae in bodies of water in a way that’s eco-friendly and safe to use.

The use of barley for algae control has been around since before the industrial era. Back in the day, whole bales of barley were used for algae control – a common practice that lead to the innovation of Barley Straw Extract. Today, you can keep algae at bay with the powerful Aquatic Barley Straw Extract that does the job that much better.

Aquatic Barley Straw Extract is 100% Australian made and is suited to Australian conditions and bodies of water. This Aquatic Barley Straw Extract is the perfect unique solution for keeping algae to a minimum.

How does Aquatic Barley Straw Extract work?

When barley straw is placed in water, it begins the process of decomposition. This releases what we call ‘phenolic compounds’ – these have a natural composition that’s similar to hydrogen peroxide. It’s believed that these phenolic compounds hold the key in keeping algae growth to a minimum.

Is it safe?

Safe for pets, fish and livestock, this concentrated liquid extract also won’t harm your aquatic plants or plants which are irrigated with the same water.

Whole Barley Straw Bales VS Barley Straw Extract

So, what’s the difference between the two? Simply put – it’s a different process when using whole Aquatic Barley Straw Bales. Whole Barley Straw Bales are manually placed and loosely bundled in water, while Aquatic Barley Straw Extract is poured into the water as a liquid. As Aquatic Barley Straw Bales can take up to 4-8 weeks to begin the decomposition process, Aquatic Barley Straw Extract may be used for the first 8 weeks along with the straw bales. Aquatic Barley Straw Extract gives you that quick-acting algae control in the early stages, while the barley bales do their thing in the longer term.

How To Use

How to Use

The Aquatic Barley Straw Extract is best applied before algae starts to appear in the body of water. Working as a growth suppressant, Aquatic Barley Straw Extract limits the growth of fresh algae. This Aquatic Barley Straw Extract is perfect to use immediately after a refill of ponds, lakes, dams and more.


Determine the volume of water to be treated, gently shake the container to mix well, measure the required amount of product and pour directly into the water body to be treated.



  • Green Water
  • Slimy algae or Dirty looking Water

Aquatic Barley Straw Extract suppresses the growth of all types of aquatic algae



What is the difference between Barley Straw Bales and Barley Straw Extract?

Barley Straw Bales are in their natural state, where as Barley Straw Extract is the concentrated liquid version of the bales. When Barley Straw is activated in water, it slowly begins to decompose and releases a chemical signature that affects the cell wall of algae. Barley Straw Extract is the liquid form of the bales which is more concentrated and treats algae must faster than the bales.

Is it safe for fish?

Yes, it will not harm fish or aquatic plants.

What happens if I accidentally put in too much Barley Straw Extract?

Our Barely Straw Extract is a natural product so don’t stress if you accidentally put in a little extra. We do recommend that you follow our instructions as these dilution rates have been tried and tested and we know they work. Why use extra product if you don’t have to!

Is Barley Straw Extract safe to use?

Barley straw is a great alternative to chemical algal control. Ours is 100% Australian grown and made and is completely safe to use.


Safe For







Scroll to Top