Blanketweed Klear - Blanket Weed Treatment

  • Harmless To All Fish, Pets & Wildlife
  • Kills Blanket Weed & Stops It From Reoccurring
  • Works Within 24 Hours
Envii Blanketweed Klear – Kills Blanket Weed For Good Within Hours Blanket weed is notoriously hard to eradicate. Many recommended treatments will clear the weed from an area for a while but as soon as t...
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Envii Blanketweed Klear – Kills Blanket Weed For Good Within Hours

Blanket weed is notoriously hard to eradicate. Many recommended treatments will clear the weed from an area for a while but as soon as the sun starts to shine the weed will start to grow and overwhelm the pond again. Envii Blanketweed Klear combines a range of natural components to firstly kill the existing blanket weed then digest the remaining agae to stop regrowth. While the treatment is powerful it is also 100% fish safe, so there is no need to move them during treatment.

How does Blanketweed Klear work?
When Blanketweed Klear comes in contact with blanket weed it releases a rush of oxygen. This bursts the cells of the weed causing it to turn brown and die within minutes. Once the treatment has spread across all the whole area the dead weed can easily be scooped out. At this stage the friendly bacteria and enzymes released by the treatment will start to act on any algae that remain preventing regrowth.

What is blanket weed?
Blanket weed effects owners of ponds both large and small and it is never a welcome sight. It is often mistaken for a plant but is actually a type of filamentous algae called Spirogyra Adnate. It's easily recognised from its bright green colour caused by its dense helical shaped chloroplasts. Blanket weed is renowned for its ability to take over a pond, taking the oxygen from the water, stifling all other life in the pond.

What causes blanket weed?
Blanket weed is most common in agitated or flowing water. In a garden or ornamental pond this environment can be cause by a pump or fountain. The second factor that influences the growth of blanket weed is strong sunlight. This is why we see a spike in blanket weed growth in the summer months, in particular in ponds where the problem was treated with a solution that only kills the weed but doesn’t deal with the left-over algae. The final factor that makes garden ponds susceptible to blanket weed is the presence of fish. Most pond owners keep fish, but less realise that a combination of excess food and faeces provide a sea of nutrients that allow blanket weed and algae to thrive. For more information, read our blog on How To Get Rid Of Blanket Weed

Keep your ponds health balance
Please note while Envii Blanketweed Klear is totally safe to use in a pond inhabited with fish, blanket weed can release stored nitrates when it dies. We recommend using Blanketweed Klear in conjunction with Envii Pond Equaliser. This will keep your ponds natural levels in balance offering an extra level of protection to your fish.

For best use, we recommend using Blanketweed Klear first thing in the morning when algae is at it's weakest.

Blanketweed Klear is designed to kill floating blanket weed, for submerged algae, please use Algae Klear  Xtra

  • Simply scatter the powder using the scoop directly onto the blanket weed.
  • The product can be applied several times in one season. However, a waiting time of 3 days is recommended before reapplying it.


To Kill Blanketweed - use 30-50 grams of powder per 1,000 litres/ 250 gallons of water. Each level scoop is 10 grams – scatter directly onto blanketweed.

To Breakdown Dead Algae – After 24 hours add 1X tablet per 5,000 litres using a bucket of pond water, leave for 60 minutes to dissolve and add to the pond to breakdown dead algae.

Before applying Blanketweed Klear check water values. Only use product if pH value is below 8.5 and the carbonate hardness (KH) is above 5dH (0.890 mmol/l CaC03.
We strongly recommend the use of Envii Pond Equaliser to stabilize the values prior to using this product.

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