Best Phoslock 5kg 2026

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Last Updated - 27.03.2026

Best Choice

01

Söll

Söll PhosLock Algae Killer

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15% Off
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Use: use the phosphate binder after each algae control and sprinkle flat into the pond - filter systems can remain in operation when product is entered
Recommended dosage: add 50 g of PhosLock granules to 1,000 litres of pond water (pond fish can stay in the pond) – for permanent phosphate reduction, dose PhosLock all year round at intervals of 6 weeks
Optimal algae prevention: phosphate binder PhosLock Algae Stop from Söll (10 kg for 200,000 litres) with 6-week depot effect reliably lowers the content of released phosphates below 0.035 mg/l
Long-lasting phosphate binding: the water treatment agent binds excess phosphate in a water-insoluble mineral and prevents nutrient resolution from the pond mud for permanently clear pond water
Free from heavy metals: the nutrient binder is based on a mineral formula and is harmless to fish, pond plants and amphibians when used properly in water

201,00 € 236,95 €(15% Off off)
Value for Money

02

Söll

Söll PhosLock Algae Killer

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15% Off
9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Use: use the phosphate binder after each algae control and sprinkle flat into the pond - filter systems can remain in operation when product is entered
Recommended dosage: add 50 g of PhosLock granules to 1,000 litres of pond water (pond fish can stay in the pond) – for permanent phosphate reduction, dose PhosLock all year round at intervals of 6 weeks
Optimal algae prevention: phosphate binder PhosLock Algae Stop from Söll (10 kg for 200,000 litres) with 6-week depot effect reliably lowers the content of released phosphates below 0.035 mg/l
Long-lasting phosphate binding: the water treatment agent binds excess phosphate in a water-insoluble mineral and prevents nutrient resolution from the pond mud for permanently clear pond water
Free from heavy metals: the nutrient binder is based on a mineral formula and is harmless to fish, pond plants and amphibians when used properly in water

201,00 € 236,95 €(15% Off off)
03

BLAUTEICH

BLAUTEICH blaumacher Phosfort Phosphate Binder, Pond Care for Permanent Phosphate Binding and Algae Prevention in the Pond Plant Pond Fish Pond Koi Pond (2 kg)

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Reliable phosphate reduction: our phosphate binder reliably lowers the content of released phosphates below 0.035 mg/l, which contributes significantly to algae control.
Recommended dosage: add 100 g Phosfort to 1,000 litres of pond water. Pond fish can remain in the pond during application. For permanent phosphate reduction, we recommend a dosage at intervals of 12 weeks.
Long-lasting phosphate binding: Phosfort binds excess phosphate in a water-insoluble mineral, prevents nutrient redissolution from the pond sludge and thus ensures permanently clear pond water.
Free from heavy metals: our mineral formula ensures safe use in water for fish, pond plants and amphibians.
Easy to use: simply insert the phosphate binder into the pond permanently in the included mesh bag. Filter systems can remain in operation without any problems.

39,90 €
04

BLAUTEICH

BLAUTEICH blaumacher Phosfort Phosphate Binder, Pond Care for Permanent Phosphate Binding and Algae Prevention in the Pond Plant Pond Fish Pond Koi Pond (2 kg)

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Reliable phosphate reduction: our phosphate binder reliably lowers the content of released phosphates below 0.035 mg/l, which contributes significantly to algae control.
Recommended dosage: add 100 g Phosfort to 1,000 litres of pond water. Pond fish can remain in the pond during application. For permanent phosphate reduction, we recommend a dosage at intervals of 12 weeks.
Long-lasting phosphate binding: Phosfort binds excess phosphate in a water-insoluble mineral, prevents nutrient redissolution from the pond sludge and thus ensures permanently clear pond water.
Free from heavy metals: our mineral formula ensures safe use in water for fish, pond plants and amphibians.
Easy to use: simply insert the phosphate binder into the pond permanently in the included mesh bag. Filter systems can remain in operation without any problems.

39,90 €
05

Söll

Söll PhosLock® AlgenStopp,1 kg für 20.000 l

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With 6-week depot effect
Removes nutrients released
For permanently clear water

28,28 €
06

Söll

Söll PhosLock® AlgenStopp,1 kg für 20.000 l

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

With 6-week depot effect
Removes nutrients released
For permanently clear water

28,28 €
07

Söll

Söll 80517 PhosLock 500 g - Phosphate Binder, Lowers Phosphate Content, for Algae Control, Pond Care for Algae Prevention in Pond Plant Pond Fish Pond Koi Pond

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Use: use the phosphate binder after each removal of algae and sprinkle flat into the pond - filter systems can remain in operation when product is entered
Recommended dosage: add 50 g of PhosLock granules to 1,000 litres of pond water (pond fish can stay in the pond) – for permanent phosphate reduction, dose PhosLock all year round at intervals of 6 weeks
Optimal algae prevention: all year round phosphate binder PhosLock from Söll with 6-week depot effect reliably lowers the content of released phosphates below 0.035 mg/l
Long-lasting phosphate binding: the water treatment agent binds excess phosphate in a water-insoluble mineral and prevents nutrient resolution from the pond mud for permanently clear pond water
Free from heavy metals: the nutrient binder is based on a mineral formula and is harmless to fish, pond plants and amphibians when used properly in water

18,49 €
08

Söll

Söll 80517 PhosLock 500 g - Phosphate Binder, Lowers Phosphate Content, for Algae Control, Pond Care for Algae Prevention in Pond Plant Pond Fish Pond Koi Pond

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7.9

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Use: use the phosphate binder after each removal of algae and sprinkle flat into the pond - filter systems can remain in operation when product is entered
Recommended dosage: add 50 g of PhosLock granules to 1,000 litres of pond water (pond fish can stay in the pond) – for permanent phosphate reduction, dose PhosLock all year round at intervals of 6 weeks
Optimal algae prevention: all year round phosphate binder PhosLock from Söll with 6-week depot effect reliably lowers the content of released phosphates below 0.035 mg/l
Long-lasting phosphate binding: the water treatment agent binds excess phosphate in a water-insoluble mineral and prevents nutrient resolution from the pond mud for permanently clear pond water
Free from heavy metals: the nutrient binder is based on a mineral formula and is harmless to fish, pond plants and amphibians when used properly in water

18,49 €
09

JBL

JBL Pond Phosphate Remover, PhosEx Pond Direct

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7.8

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Removes the algae nutrient phosphate. - Especially suitable for ponds without filter.
Prevents and combats algae problems (floating and thread algae) in the garden pond by removing nutrients
Package contents: 5 L, range: 100000 litres
Gentle effect thanks to harmless iron compound that binds and precipitates the phosphate.
Clears cloudy pond water. - Works within 24 hours.

53,33 €
10

JBL

JBL Pond Phosphate Remover, PhosEx Pond Direct

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7.7

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Removes the algae nutrient phosphate. - Especially suitable for ponds without filter.
Prevents and combats algae problems (floating and thread algae) in the garden pond by removing nutrients
Package contents: 5 L, range: 100000 litres
Gentle effect thanks to harmless iron compound that binds and precipitates the phosphate.
Clears cloudy pond water. - Works within 24 hours.

53,33 €