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Extract of Barley Straw

250ml treats up to 1000 gallons (4,500 litres) Available in 250ml, 500ml, 1L, 2.5L, 5L and 25L sizes.

Price:  £ 8.71

Our liquid barley straw extract is a completely natural solution to the problems of algae, blanket weed and green water. Ecopond Extract of Barley Straw helps keep your pond clean and clear.

Regular physical removal of blanket weed from a pond is a time consuming job - and it makes the problem worse.  One way to control blanket weed is by using pads or bales of barley straw itself, but this is a messy, unattractive solution and, because the straw needs to break down to become active, it will take several weeks before it becomes effective.  Ecopond Extract of Barley Straw is a faster-acting, simple, clean, eco-friendly solution to control the growth of algae (both green water and blanket weed).  This pet and wildlife friendly anti-algae liquid product prevents pond water turning green and stops stringy blanket weed from forming.  Extract of Barley Straw contains no synthetic chemicals or artificial pesticides.  It is made in the UK using organic barley straw.  It can be used in any type of pond - fish pond, wildlife pond or swimming pond.  Product stores for up to 18 months.  

We recommend removing as much of any existing blanket weed as possible prior to dosing for best results and to

prevent any build up of decaying organic matter.


Dosage for ponds with an existing algae problem: 125 mls per 4,500 litres (1000 gallons) initial dose followed by 20 mls per 4,500 litres weekly thereafter throughout the summer.

Dosage as a preventative measure: 20 mls per 4,500 litres from early Spring.

For ponds less than 4,500 litres: Use a minimum dose of 70 mls followed by a maintenance dose of 10 mls per week.

A 250 ml bottle will treat a 4,500 litre pond for approximately 6 weeks.


We can supply Extract of Barley Straw in 25 litre drums for large applications.  Ecopond Extract of Barley Straw is approved by the DWI (Drinking Water Inspectorate) for use in raw water reservoirs in the United Kingdom

See attached pdf for further Dosing Information and answers to other Frequently Asked Questions about Extract of Barley Straw, or go to our News & Tips page to find out which algae control product is best for you as well as helpful information on why algae occurs and how to discourage it.

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Ecopond Extract of Barley Straw.PI.pdf