Environmentally friendly treatment that wipes out blanket weed and stops it from returning.

Blanket weed is one of the most hated problems of pond keeping and a nuisance to everyone as it makes your pond unsightly, blocks filters, pumps and pipes. Stop Blanketweed is a unique product which will kill & prevent the regrowth of blanket weed if used as instructed. Stop Blanketweed is easy and simple to use, it contains no harmful chemicals and is safe for all pond inhabitants. Stop Blanketweed is HSE Approved and doesn’t affect your ponds clarity. Evolution Aqua’s Stop Blanketweed should be used as an aquatic Algicide.

Stop Blanketweed is available in sizes of 1kg which is suitable for ponds up to 10,000 litres or 2,200 gallons, 2.5kg containers suitable for 25,000 litres or 5,500 gallons and 4kg containers for 40,000 litres or 8,800 gallons.

How much Stop Blanketweed do I need for my pond?

To calculate the correct dose of Stop Blanketweed needed for your pond, simply enter the size of your pond into the calculators below:

Enter your pond size in litres:

The amount of Stop Blanketweed per dose is: Grams

Enter your pond size in gallons:

The amount of Stop Blanketweed per dose is: Grams

Now mix this amount of Stop Blanketweed in a container holding some pond water (an old watering can would be ideal).

Then pour this mixture evenly over your pond.

We recommend that you treat your pond with the correct amount of Stop Blanketweed once a week for 3 to 4 weeks (or until the blanket weed has died).

Continue with monthly doses thereafter to prevent the blanket weed from returning.