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Best Pond Care Water Treatment of 2025
Last updated on 30/11/2025
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1
Envii Pond Klear Xtra – Strong Pond Clear Water Treatment, Naturally Clears Green Pond Water – Treats Up To 100,000 litres
envii
Free Shipping
Why we love it
Powerful multipurpose pond treatment.
Natural beneficial bacteria usage.
Safe for aquatic life.
Main Highlights
Multipurpose Pond Treatment – Pond Klear Xtra is a multipurpose treatment helping clear green & murky water, maintain healthy sludge levels & help reduces the chance of blanket weed.
Natural Beneficial Bacteria Treatment – Containing billions of natural beneficial bacteria, Pond Klear Xtra is 3 x stronger than our original Pond Klear. This makes it one of the strongest treatments on the market.
Safe for all Fish & Wildlife – Like all Envii pond products, Pond Klear Xtra is safe for all fish, wildlife & plants. This can be used in conjunction with all other bacteria treatments.
Easy to use – With a built in measuring chamber, applications are really easy. We recommend using 10ml per 1,000 litres of water. This makes for reliable and quick treatments.
Treats a Large Volume of Water – Pond Klear Xtra treats up to 100,000 litres of pond water. If your pond is under 20,000 litres, this means you will get multiple treatments to last you through the year.
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9.7
Exceptional
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9.7
Exceptional
envii
Envii Pond Klear Xtra – Strong Pond Clear Water Treatment, Naturally Clears Green Pond Water – Treats Up To 100,000 litres
Free Shipping
Check Price
Show More
Why we love it
Powerful multipurpose pond treatment.
Natural beneficial bacteria usage.
Safe for aquatic life.
Main Highlights
Multipurpose Pond Treatment – Pond Klear Xtra is a multipurpose treatment helping clear green & murky water, maintain healthy sludge levels & help reduces the chance of blanket weed.
Natural Beneficial Bacteria Treatment – Containing billions of natural beneficial bacteria, Pond Klear Xtra is 3 x stronger than our original Pond Klear. This makes it one of the strongest treatments on the market.
Safe for all Fish & Wildlife – Like all Envii pond products, Pond Klear Xtra is safe for all fish, wildlife & plants. This can be used in conjunction with all other bacteria treatments.
Easy to use – With a built in measuring chamber, applications are really easy. We recommend using 10ml per 1,000 litres of water. This makes for reliable and quick treatments.
Treats a Large Volume of Water – Pond Klear Xtra treats up to 100,000 litres of pond water. If your pond is under 20,000 litres, this means you will get multiple treatments to last you through the year.
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Value for Money
2
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
Evolution Aqua
4% Off
Free Shipping
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.
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9.6
Superb
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9.6
Superb
Evolution Aqua
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
4% Off
Free Shipping
Check Price
Show More
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.
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3
Envii Pond Klear - Natural Green Pond Water Treatment, Clears Green and Murky Water for Crystal Clear Healthy Water, Safe for all Fish and Wildlife -1L Treats 40,000 Litres
envii
Free Shipping
Why we love it
Clears green, murky pond water.
Contains beneficial, safe bacteria.
Improves water clarity efficiently.
Main Highlights
Clears Green & Murky Pond Water - Pond Klear clears green and murky water by targetting microscopic particles and nutrients in ponds, clumping them at the bottom of the pond. This will be removed by a pump and filter or digested by the bacteria.
Contains Millions of Benefical Bacteria - Pond Klear contains no harsh chemicals and is completely natural making it safe for all fish including koi & sturgeon, wildlife & plants
Improved Water Clarity - Used weekly, Pond Klear will help improve the clarity of the pond water along with benefiting fishes health by removing phosphates and replenishing good bacteria
Easy to Use Bottle - With an accurate dosing chamber, applications are really easy to ensure you're using enough per treatment to suit the size of your pond
Treats Large Areas of Water - Pond Klear 1L bottle will treat up to 40,000 litres of water. All instructions are on the back of the bottle
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9.5
Superb
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9.5
Superb
envii
Envii Pond Klear - Natural Green Pond Water Treatment, Clears Green and Murky Water for Crystal Clear Healthy Water, Safe for all Fish and Wildlife -1L Treats 40,000 Litres
Free Shipping
Check Price
Show More
Why we love it
Clears green, murky pond water.
Contains beneficial, safe bacteria.
Improves water clarity efficiently.
Main Highlights
Clears Green & Murky Pond Water - Pond Klear clears green and murky water by targetting microscopic particles and nutrients in ponds, clumping them at the bottom of the pond. This will be removed by a pump and filter or digested by the bacteria.
Contains Millions of Benefical Bacteria - Pond Klear contains no harsh chemicals and is completely natural making it safe for all fish including koi & sturgeon, wildlife & plants
Improved Water Clarity - Used weekly, Pond Klear will help improve the clarity of the pond water along with benefiting fishes health by removing phosphates and replenishing good bacteria
Easy to Use Bottle - With an accurate dosing chamber, applications are really easy to ensure you're using enough per treatment to suit the size of your pond
Treats Large Areas of Water - Pond Klear 1L bottle will treat up to 40,000 litres of water. All instructions are on the back of the bottle
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4
Envii Winter Pond Treatment – Reduce Sludge & Improves Water Clarity, Works at Low Winter Temperatures, Natural Bacteria Treatment for All Ponds – Treats 60,000 Litres
envii
Free Shipping
Why we love it
Prepares pond for spring.
Works in cold temperatures.
Natural ingredients only.
Main Highlights
Clears Sludge & Treats Green Water – Envii Winter Pond Treatment provides billions of beneficial bacteria & enzymes to your pond to help clear & reduce sludge whilst helping clear green water in garden ponds.
Works All Winter – Unlike most bacteria treatments, ours works below 4°C to ensure your pond has good bacteria activity all year round. This helps prevent the build up of sludge in spring, helping prevent green water, blanket weed & algae growth in the future.
Works in All Ponds – Winter Pond Treatment can be used in ponds with or without a filtration system. Due to our unique formula, filters are not required to succeed. Alternatively, you can also apply this to your filters should you keep them running all year round.
Safe for All Fish, Wildlife & Plants – Containing only natural ingredients, Winter Pond Treatment is completely safe for all fish including sturgeon & koi, all wildlife and plants.
Large Treatments – One packet will treat up to 60,000 litres, containing 12 tablets. Each tablet treats 5,000 litres and is completely natural, meaning you can’t use to much per treatment.
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9.5
Superb
Check Price
9.5
Superb
envii
Envii Winter Pond Treatment – Reduce Sludge & Improves Water Clarity, Works at Low Winter Temperatures, Natural Bacteria Treatment for All Ponds – Treats 60,000 Litres
Free Shipping
Check Price
Show More
Why we love it
Prepares pond for spring.
Works in cold temperatures.
Natural ingredients only.
Main Highlights
Clears Sludge & Treats Green Water – Envii Winter Pond Treatment provides billions of beneficial bacteria & enzymes to your pond to help clear & reduce sludge whilst helping clear green water in garden ponds.
Works All Winter – Unlike most bacteria treatments, ours works below 4°C to ensure your pond has good bacteria activity all year round. This helps prevent the build up of sludge in spring, helping prevent green water, blanket weed & algae growth in the future.
Works in All Ponds – Winter Pond Treatment can be used in ponds with or without a filtration system. Due to our unique formula, filters are not required to succeed. Alternatively, you can also apply this to your filters should you keep them running all year round.
Safe for All Fish, Wildlife & Plants – Containing only natural ingredients, Winter Pond Treatment is completely safe for all fish including sturgeon & koi, all wildlife and plants.
Large Treatments – One packet will treat up to 60,000 litres, containing 12 tablets. Each tablet treats 5,000 litres and is completely natural, meaning you can’t use to much per treatment.
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5
ClearWaters Blanket Weed Treatment for Ponds – 1L Bucket to Treat 10,000 / Maintain 80,000L – Quick Action Pond Weed Treament for Blanket Weed – Pond Cleaner Safe for Fish and Wildlife
CLEAR waters
Free Shipping
Why we love it
Use supports eco-friendly pest control.
Varying packaging adds interest.
Promotes preservation of natural habitats.
Main Highlights
Not for use in ornamental ponds when frogs/toads spawning as they will want to lay their eggs in the blanked weed. Not for use in public wildlife ponds.
Packaging may vary
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9.3
Superb
Check Price
9.3
Superb
CLEAR waters
ClearWaters Blanket Weed Treatment for Ponds – 1L Bucket to Treat 10,000 / Maintain 80,000L – Quick Action Pond Weed Treament for Blanket Weed – Pond Cleaner Safe for Fish and Wildlife
Free Shipping
Check Price
Show More
Why we love it
Use supports eco-friendly pest control.
Varying packaging adds interest.
Promotes preservation of natural habitats.
Main Highlights
Not for use in ornamental ponds when frogs/toads spawning as they will want to lay their eggs in the blanked weed. Not for use in public wildlife ponds.
Packaging may vary
Show More
6
AquaDesign POND SAFE 1000ML Pond Tap Water Conditioner Dechlorinator Chlorine Remover TREATS 25,000 Litres
AquaDesign
Free Shipping
Why we love it
Protects fish and plants.
Safe for ponds too.
Highly concentrated for value.
Main Highlights
Removes chlorine, chloramine and heavy metals
Makes tap water safe for fish, plants and wildlife
Suitable for aquariums and ponds
Aqua design SAFE comes with a 3ml pipette for dosing
Also available in 2500ml and 5000ml sizes
Dosage: 1ml per 25L of tap water
Highly concentrated formula offers exceptional value
Also great for water features and bird baths
Show More
9.3
Superb
Check Price
9.3
Superb
AquaDesign
AquaDesign POND SAFE 1000ML Pond Tap Water Conditioner Dechlorinator Chlorine Remover TREATS 25,000 Litres
Free Shipping
Check Price
Show More
Why we love it
Protects fish and plants.
Safe for ponds too.
Highly concentrated for value.
Main Highlights
Removes chlorine, chloramine and heavy metals
Makes tap water safe for fish, plants and wildlife
Suitable for aquariums and ponds
Aqua design SAFE comes with a 3ml pipette for dosing
Also available in 2500ml and 5000ml sizes
Dosage: 1ml per 25L of tap water
Highly concentrated formula offers exceptional value
Also great for water features and bird baths
Show More
7
AquaDesign POND SAFE 2500ML Pond Tap Water Conditioner Dechlorinator Chlorine Remover TREATS 62,500 Litres
AquaDesign
Free Shipping
Why we love it
Makes tap water safe.
Exceptional value, highly concentrated.
Available in multiple sizes.
Main Highlights
Removes chlorine, chloramine and heavy metals
Makes tap water safe for fish, plants and wildlife
Suitable for aquariums and ponds
Aqua design SAFE comes with a 3ml pipette for dosing
Also available in 1000ml and 5000ml sizes
Dosage: 1ml per 25L of tap water
Highly concentrated formula offers exceptional value
Also great for water features and bird baths
Show More
9.2
Superb
Check Price
9.2
Superb
AquaDesign
AquaDesign POND SAFE 2500ML Pond Tap Water Conditioner Dechlorinator Chlorine Remover TREATS 62,500 Litres
Free Shipping
Check Price
Show More
Why we love it
Makes tap water safe.
Exceptional value, highly concentrated.
Available in multiple sizes.
Main Highlights
Removes chlorine, chloramine and heavy metals
Makes tap water safe for fish, plants and wildlife
Suitable for aquariums and ponds
Aqua design SAFE comes with a 3ml pipette for dosing
Also available in 1000ml and 5000ml sizes
Dosage: 1ml per 25L of tap water
Highly concentrated formula offers exceptional value
Also great for water features and bird baths
Show More
8
Oase AquaActiv Safe & Care Pond Dechlorinator 500ml
Oase
8% Off
Why we love it
Removes toxic chlorine quickly.
Neutralises heavy metals effectively.
Strengthens fish mucous membrane.
Main Highlights
Removes chlorine and heavy metals
Provides bio protection of the mucous membrane
Stabilises the pH value
Creates optimum conditions for settlement of filter bioligy
Removes drug residues, therefore ideal after completion of treatment
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9.1
Superb
Check Price
9.1
Superb
Oase
Oase AquaActiv Safe & Care Pond Dechlorinator 500ml
8% Off
Check Price
Show More
Why we love it
Removes toxic chlorine quickly.
Neutralises heavy metals effectively.
Strengthens fish mucous membrane.
Main Highlights
Removes chlorine and heavy metals
Provides bio protection of the mucous membrane
Stabilises the pH value
Creates optimum conditions for settlement of filter bioligy
Removes drug residues, therefore ideal after completion of treatment
Show More
9
Blagdon Water Quality Pond Grenade, Safe, Natural, Fast Acting Beneficial Bacteria & Enzymes for Clean Pond Water, Pack of 3
Blagdon
7% Off
Free Shipping
Why we love it
Promotes clean, healthy pond environment.
Fast acting and safe formula.
Effortless usage for all ponds.
Main Highlights
FOR A CLEAN AND HEALTHY POND - Boosts removal of organic waste, ammonia and nitrite
FAST ACTING - Formulated using safe, fast acting, pure bacteria and enzymes
FOR USE WHEN - Starting a new pond, reactivating filter bacteria in Spring, introducing new fish, conducting pond maintenance
PET AND WILDLIFE SAFE - Harmless to filters and all species of pond fish, plants, pets and wildlife
EASY TO USE - Pack of 3 Pond Grenades, each Grenade treats 5,000 litres of pond water
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9.1
Superb
Check Price
9.1
Superb
Blagdon
Blagdon Water Quality Pond Grenade, Safe, Natural, Fast Acting Beneficial Bacteria & Enzymes for Clean Pond Water, Pack of 3
7% Off
Free Shipping
Check Price
Show More
Why we love it
Promotes clean, healthy pond environment.
Fast acting and safe formula.
Effortless usage for all ponds.
Main Highlights
FOR A CLEAN AND HEALTHY POND - Boosts removal of organic waste, ammonia and nitrite
FAST ACTING - Formulated using safe, fast acting, pure bacteria and enzymes
FOR USE WHEN - Starting a new pond, reactivating filter bacteria in Spring, introducing new fish, conducting pond maintenance
PET AND WILDLIFE SAFE - Harmless to filters and all species of pond fish, plants, pets and wildlife
EASY TO USE - Pack of 3 Pond Grenades, each Grenade treats 5,000 litres of pond water
Show More
10
Evolution Aqua Pure Pond – Beneficial Bacteria for Ponds | Pond Bacteria Treatment & Healthy Water Maintenance for clear pond | Aids biological filtration and Fish Safe Pond Equaliser | 500ml
Evolution Aqua
4% Off
Free Shipping
Why we love it
Promotes healthy aquatic environments.
Efficiently reduces harmful components.
Simplifies water purification process.
Main Highlights
[EASY DOSAGE] – Similarly to Evolution Aqua Pure Pond Bomb simply add Pure Pond directly into your pond filter for optimal results, it can also go in the Pond but for the best results place in filter. Works with pond sludge treatment, pond algae treatment, sludge bomb or a pond green water treatment, Pure Pond balls provide a long-lasting and eco-friendly solution compatible with our full range of products.
[MAINTENANCE] – Achieve consistent crystal-clear water and a healthy aquatic environment by eliminating ammonia and nitrite, ensuring balanced water parameters for your precious fish and pond wildlife.
[BIODEGRADABLE DESIGN] - Pure Pond features biodegradable polymer balls that gradually release live pond bacteria as needed, providing a safe and natural pond water treatment solution for maintaining water quality without harming fish or aquatic life.
[LASTING BACTERIA BOOST] - Each litre of Pure Pond contains over 8 billion live bacteria, breaking down waste and supporting long-term pond health. Unlike Pond Bomb being for emergencies, this is a maintenance product so should be dosed monthly to provide your pond with consistently safe parameters
[IMPROVES FISH HEALTH] - By reducing harmful ammonia and nitrite levels, Pure Pond promotes a cleaner, healthier pond environment ensuring safe water parameters for your fish and reducing the risk of disease and nasty infections. It’s perfect supporting the ecosystem and the rest of the wildlife and animals surrounding your pond.
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9.0
Superb
Check Price
9.0
Superb
Evolution Aqua
Evolution Aqua Pure Pond – Beneficial Bacteria for Ponds | Pond Bacteria Treatment & Healthy Water Maintenance for clear pond | Aids biological filtration and Fish Safe Pond Equaliser | 500ml
4% Off
Free Shipping
Check Price
Show More
Why we love it
Promotes healthy aquatic environments.
Efficiently reduces harmful components.
Simplifies water purification process.
Main Highlights
[EASY DOSAGE] – Similarly to Evolution Aqua Pure Pond Bomb simply add Pure Pond directly into your pond filter for optimal results, it can also go in the Pond but for the best results place in filter. Works with pond sludge treatment, pond algae treatment, sludge bomb or a pond green water treatment, Pure Pond balls provide a long-lasting and eco-friendly solution compatible with our full range of products.
[MAINTENANCE] – Achieve consistent crystal-clear water and a healthy aquatic environment by eliminating ammonia and nitrite, ensuring balanced water parameters for your precious fish and pond wildlife.
[BIODEGRADABLE DESIGN] - Pure Pond features biodegradable polymer balls that gradually release live pond bacteria as needed, providing a safe and natural pond water treatment solution for maintaining water quality without harming fish or aquatic life.
[LASTING BACTERIA BOOST] - Each litre of Pure Pond contains over 8 billion live bacteria, breaking down waste and supporting long-term pond health. Unlike Pond Bomb being for emergencies, this is a maintenance product so should be dosed monthly to provide your pond with consistently safe parameters
[IMPROVES FISH HEALTH] - By reducing harmful ammonia and nitrite levels, Pure Pond promotes a cleaner, healthier pond environment ensuring safe water parameters for your fish and reducing the risk of disease and nasty infections. It’s perfect supporting the ecosystem and the rest of the wildlife and animals surrounding your pond.
Show More