10 Best Garden Pond Algae Remover in The UK

Last updated on 04/07/2025

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Best Choice

9.9

Exceptional

Blagdon

Blagdon Pond Algaway, Removes Blanketweed and String Algae, Pet & Wildlife Safe, Large, Treats 45,845L of Pond Water

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Why We Love It

Promotes vibrant, healthy plants.
Accelerates blanketweed removal.
Safe for aquatic life.

Main Highlights

Kills blanketweed and string algae, which can then be removed from the pond to prevent further outbreaks
This treatment will also help to encourage healthy, lush and healthy plant growth
Remove as much blanket weed as possible by hand to increase the product’s rate of effectiveness
Add one capful for every 1,950 litres of pond water to a bucket of warm water and dissolve, distribute evenly over the pond surface
Effective and easy to use, safe for fish, wildlife and pets. Treats 45,845 litres of pond water

Evolution Aqua Pure Duo Pack Pond Bomb & Sludge Bomb Pond Clear Water Treatment Pond Sludge Remover - Duo Value Pack Offers Complete Natural Pond Water Treatment for Fish Ponds

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Why We Love It

Boosts pond health naturally.
Reduces maintenance effort.
Award-winning UK product.

Main Highlights

✔ Contains 1 x PURE Sludge Bomb, 1 x PURE Pond Bomb - A perfect combination of aerobic and anaerobic bacteria and enzymes working efficiently together as a complete pond clear water treatment for small ponds, large fish ponds and water features.
✔ Digests sludge and cleans up organic waste - PURE Sludge Bomb contains an optimal mix of all natural anaerobic enzymes and bacteria that work as an effective pond cleaner treatment and sludge buster for garden ponds.
✔ Natural fast acting chemical free clear water pond treatment - PURE Pond Bomb contains the perfect formula of aerobic enzymes and bacteria designed to quickly break down organic waste in water, leaving your pond clean and fish healthy.
✔ Reduces filter and pond maintenance – Naturally removes excess smelly organic waste, reducing the need to use chemical algae remover and harsh blanket weed treatments for ponds. Pure Duo Pack Pond Bombs also work as an ammonia and nitrite remover.
✔ Award winning product manufactured in the UK – Part of the Evolution Aqua award winning range of bacterial products for ponds, freshwater and marine aquariums.

Banish Duckweed Pond Water Treatment 2500ml Greenwater Algae Remover

Why We Love It

Effective duckweed suppression ensured.
Nutrient starvation eliminates growth.
Convenient measuring cup included.

Main Highlights

Effectively suppresses duckweed growth for a cleaner, healthier pond ecosystem.
Tackles duckweed at its root, starving it of nutrients needed for further growth.
Includes a convenient measuring cup for accurate and mess-free application, simplifying the treatment process.
Enjoy sustained control over duckweed for weeks, minimizing the need for frequent reapplication.
2.5L bottle treats 56,250 litres (12,500 Gallons).

envii Algae Klear Xtra – Blanket Weed Treatment for Ponds, Removes Blanket weed & String Algae Working All Year Round, Safe for all Fish & Plants – 500ml Treats 10,000 litres

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Why We Love It

Effectively removes submerged algae.
Prevents new algae growth.
Completely safe for all.

Main Highlights

Blanket Weed Remover – Algae Klear Xtra safely removes submerged blanket weed and string algae in all ponds. Our algae treatment can be used all year round making it suitable for treatments through winter.
Fast Acting Treatment – Specifically designed to target and kill all submerged algae effectively within 3 weeks of the first treatment.
Helps Prevent New Algae – Due to our unique UV light filter, this will help supress the growth of new blanket weed and algae at any temperature.
Safe for All Fish – Algae Klear Xtra is completely safe for all fish & plants whilst encouraging the overall health of your pond.
Treatments – A 500ml bottle is enough to treat 10,000 litres. We also have a 1L bottle which treats 20,000L & 5L treats 100,000L.

ClearWaters Pond Sludge Remover 1L – Treats 10,000 Litres of Water – Pond Algae Treatment Ideal for Spring and Summer – Fast Acting Pond Cleaner to Remove Sludge

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Why We Love It

Promotes healthier ponds efficiently.
Ensures safe wildlife habitations.
Exceptionally easy to use.

Main Highlights

EFFECTIVELY REMOVE SLUDGE: ClearWaters Sludge Remover provides a biological solution for a cleaner pond by removing sludge and silt on the pond base
IMPROVE POND HEALTH: Dramatically improves pond health by eliminating excess waste and improving water quality
SAFE FOR FISH AND WILDLIFE: ClearWaters Sludge Remover is safe for fish and wildlife, making it a great option for all types of ponds
EASY TO USE: Simply add the recommended dosage to your pond and watch as it works its magic to clear away sludge and debris
TREATS LARGE AMOUNTS OF WATER: One 1L bottle of ClearWaters Sludge Remover can treat up to 10,000 litres of water, making it an effective and efficient pond cleaning solution

NT Labs Pond Magiclear, Clears Green and Cloudy Water, Control Against Algae Build up, Improves Pond Water Quality, Pond Water Flocculant (1 Litre)

Why We Love It

Clears green, cloudy water.
Easy to use.
Suitable for all ponds.

Main Highlights

【CLEARS GREEN AND CLOUDY POND WATER】: Use when water appears green and/or cloudy. Magiclear causes particles in the water to clump together which can then easily settle out of suspension or be removed by the filter.
【EASY TO USE】: To work out the required dosage for your pond, simply calculate the volume of your pond in litres (length x width x depth (in cm)/1000) or alternatively, use our Online Dosage Calculator. Test the pH and KH of the water (Do not use if the KH is below 6 or the pH is below 7). Aerate pond well e.g. fountain, waterfall or air pump. Conduct a partial water change (as much as is practical) before use, especially if the water is extremely green, like “pea soup”. Switch off pump only if strong flow rate could prevent particles from clumping but remember to switch back on as soon as water clarifies.
【SUITABLE FOR USE WITH A FILTERLESS POND】: Without a filter, some clumps may float and can then be removed using a net. Use when you have plenty of time to observe the fish and take action in the unlikely event of a reaction.
【POND WATER FLOCCULANT】: Magiclear is a flocculant, meaning it causes particles to clump together. Follow with a dose of NT Labs Sludgeclear to clear any excess sludge which may settle at the bottom of your pond
【SUITABLE FOR ALL POND KEEPERS】:The ease of use of Pond Magiclear means it is perfect for use by beginners and seasoned pond keepers alike.

Blagdon Natural Barley Straw Bugs, 500 ml, Pond Water Treatment, Clears Green Water, Suspended Algae and Blanketweed, Consumes Phosphate, Eats Organic Matter, Pet and Wildlife Safe

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Why We Love It

Clears algae effectively.
Pet and wildlife safe.
Eliminates unsightly bales.

Main Highlights

CLEARS ALGAE AND BLANKETWEED - a formula created for treating ponds with green-water, algae and blanketweed problems with no use of biocides
GOOD BACTERIA - Barley Straw Bugs, made up of consume phosphate and organic matter, which algae need to survive thus taking away their nutrients and making them unable to thrive
NO UNSIGHTLY BALES – works like barley straw bales but without the unsightly bales
PET & WILDLIFE SAFE – Barley Straw Bugs are harmless to pets and wildlife, beneficial to filter bacteria and can be used in wildlife ponds and ponds with fish and other pond water inhabitants
ACCURATE DOSING CHAMBER - the accurate dosing chamber makes for easy, no mess measurement of treatment to suit the size of pond – shake bottle well for best results

Evolution Aqua Stop Blanketweed - Effective Blanket Weed Treatment for Ponds & Pond Algae Treatment | Pond Weed Remover and Pond Cleaner | Fast-Acting Solution | Treats up to 10000L | 1kg

Why We Love It

Controls Blanketweed efficiently.
Free from harmful chemicals.
Comes in multiple sizes.

Main Highlights

[Powerful Blanket Weed & Algae Remover] - Effectively removes blanketweed, pond algae, and green water, providing a cleaner, healthier pond environment. Helps achieving crystal-clear pond water.
[Safe for Fish, Plants & Wildlife] - Formulated with no harmful chemicals, Stop Blanketweed by Evolution Aqua is safe for fish, pond plants, and a wildlife pond so we are 100% pond safe.
[Fast-Acting Pond Treatment] - Enjoy rapid results with our quick-action formula. See visible improvement in water clarity and blanketweed reduction within days, quickly combating pond weed and pond sludge resulting in a clear pond.
[Easy-to-Use & Long-Lasting Results] - Apply directly into your ponds water with ease. This reliable blanket weed treatment prevents algae regrowth, giving you lasting control with minimal effort, making it ideal as a preventative fresh start pond treatment.
[Trusted Pond Treatment for Professionals & Hobbyists] - Recommended worldwide, Stop Blanketweed offers proven effectiveness and is the perfect pond water treatment, pond water cleaner, blanket weed remover and blanket weed killer. A top choice for pond clear water treatment or pond weed treatment.

Swell Anti Algae Pond Balls 300ml tub. Pond Algae Remover and Pond Cleaner

Why We Love It

Safe for all pond types.
Controls algae efficiently.
Environmentally friendly gel balls.

Main Highlights

Easy to use anti-algae pond balls to add straight to filters
100ml treats 450l
Safe to use in koi, community and wildlife ponds
Controls algae growth and encourages clear water
Completely degradable gel ball that releases bacteria into your filter

easylife lifestyle solutions

Easylife Fountain Fresh & Inhibitor for Garden Fountains and Water Features, Slime, Scum and Algae Remover Keeps Water Fountain Clean, Safe for Animals, 500ml - Fully Guaranteed

Why We Love It

Effective removal of algae.
Safe around animals.
Multifunctional cleaning capabilities.

Main Highlights

RESTORES THE BEAUTY OF YOUR FOUNTAIN - enjoy a fresh, vibrant garden centrepiece year-round thanks to Easylife's powerful cleaner which effortlessly removes green slime, algae and scum from your garden water feature and restores its beauty
STOPS SLIME, ALGAE AND SCUM FROM COMING BACK - specially formulated with anti-bacterial properties which helps to stop unwanted buildup and keeps the garden fountain sparkling clean with crystal-clear water
ALSO CLEANS SURROUNDING FEATURES - this water fountain cleaner is perfect for cleaning not just your fountain but all surrounding water features for the garden as well, as it effectively removes debris, leaving your entire outdoor space looking fresh
SAFE AROUND ANIMALS - made with non-toxic ingredients, it keeps your outdoor space clean and beautiful while making sure your pets and wildlife are safe so you have peace of mind
PRODUCT FROM EASYLIFE - well-established with a reputation for making excellent quality, problem-solving products for the home and garden

8.7

Excellent

We scanned 238 products

We reviewed these offers relevant to the Garden Pond Algae Remover within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Blagdon, Evolution Aqua, Pisces, envii, CLEAR waters, NT Labs, Swell UK, easylife lifestyle solutions, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Garden Pond Algae Remover in the market, we considered we took a deep dive into 1191 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Blagdon Pond Algaway, Removes Blanketweed and String Algae, Pet & Wildlife Safe, Large, Treats 45,845L of Pond Water. We love many things about this product by Blagdon. What sets it apart from the competition is Promotes vibrant, healthy plants. , Accelerates blanketweed removal, Safe for aquatic life.
The best value product for most shoppers and where user satisfaction is continuously the highest is Evolution Aqua Pure Duo Pack Pond Bomb & Sludge Bomb Pond Clear Water Treatment Pond Sludge Remover - Duo Value Pack Offers Complete Natural Pond Water Treatment for Fish Ponds by Evolution Aqua based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Garden Pond Algae Remover and the best cost-to-value ratio is Easylife Fountain Fresh & Inhibitor for Garden Fountains and Water Features, Slime, Scum and Algae Remover Keeps Water Fountain Clean, Safe for Animals, 500ml - Fully Guaranteedat easylife lifestyle solutions with a % discount.
Our list of the best Garden Pond Algae Remover is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Garden Pond Algae Remover in The UK

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Blagdon Feature Clear, Fast Acting, Effective Treatment, Cleans Cloudy Water and Smelly Bio-Fouling, Removes Sludge & Algae, 250ml, Treats 625 Litres

Pisces Banish Blanketweed 250ml Pond Water Treatment String Algae Remover

AllPondSolutions Water Feature Ornament Fountain Cleaner Treatment, Keeps Water Crystal Clear - Removes Algae Dirt and Green Water - Treats 140 Litres

Swell Barley Straw Pond Balls 300ml tub. Barley Straw for Ponds to act as Pond Cleaner and Algae Treatment

Everbuild 404 Fast Powerful Fungicidal Wash – Removes Lichens, Fungi and Algae – Exterior and Interior use – 5 Litre

We scanned 238 products

We concluded that: