Best Abacus 5 L Nell 2025

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Last Updated - 09/06/2025

Best Choice

01

ABACUS

ABACUS® Nell Ultra Green Growth Remover & Algae Remover Concentrate, Extremely Strong! Removes Green Growth & Algae Automatically with Long-Term Protection - for Stone, Facade, Patio, Roof - Nell

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9.8

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

AUTOMATIC CLEANING: The Nell Ultra green growth remover & algae remover removes the green coating by itself and is extremely effective - you can sit back and relax while it does the work. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
Very high yield: the Nell Ultra green growth remover has one of the highest active ingredient content on the market with 40% active ingredient. This makes our green growth remover not only extremely effective, but also very economical - with one litre of our algae remover, up to 100 m² of area of algae and green growth can be freed. This exceptionally high efficiency protects the environment and your wallet without compromising on quality.
Versatile effective: our green growth and algae remover is a real all-rounder and can be used on all waterproof surfaces. It is the perfect helper for outdoor use and is ideal for removing green growth on patios, pavements, stones, facades, plaster, walls, gravestones, roofs, fences, awnings, WPC and much more.
Proven premium quality: our green growth remover has been removing algae and green growth throughout Germany for over 30 years and has proven itself - more than 2 million bottles sold speak for themselves. The combination of carefully selected ingredients and an exceptionally high active ingredient content ensure the effective and automatic removal of algae, green growth, lichens and fungi that Nell Ultra is known for.
Officially registered: Nell Ultra green growth and algae remover is a biocide: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-111940
Long-term protection with deep effect: our green growth remover offers the self-acting effect as well as the proven long-term protection. The special formula penetrates into the capillaries and removes even the smallest residues of algae, lichens and fungi. This means that surfaces treated with Nell Ultra remain protected from new infestations for up to 12 months - not only looks beautiful, but also saves time and money.
In harmony with the environment: the Nell Ultra green growth remover and algae remover meets even the highest quality standards thanks to its sustainability. Since the environment is important to us, we have developed a green growth remover that is chlorine-free, acid-free and contains no animal ingredients. The selected ingredients can also be completely biodegradable and are safe for humans and animals.

94,90 €
Value for Money

02

ABACUS

ABACUS® Nell Ultra Green Growth Remover & Algae Remover Concentrate, Extremely Strong! Removes Green Growth & Algae Automatically with Long-Term Protection - for Stone, Facade, Patio, Roof - Nell

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9.6

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.

Show more
Main highlights

AUTOMATIC CLEANING: The Nell Ultra green growth remover & algae remover removes the green coating by itself and is extremely effective - you can sit back and relax while it does the work. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
Very high yield: the Nell Ultra green growth remover has one of the highest active ingredient content on the market with 40% active ingredient. This makes our green growth remover not only extremely effective, but also very economical - with one litre of our algae remover, up to 100 m² of area of algae and green growth can be freed. This exceptionally high efficiency protects the environment and your wallet without compromising on quality.
Versatile effective: our green growth and algae remover is a real all-rounder and can be used on all waterproof surfaces. It is the perfect helper for outdoor use and is ideal for removing green growth on patios, pavements, stones, facades, plaster, walls, gravestones, roofs, fences, awnings, WPC and much more.
Proven premium quality: our green growth remover has been removing algae and green growth throughout Germany for over 30 years and has proven itself - more than 2 million bottles sold speak for themselves. The combination of carefully selected ingredients and an exceptionally high active ingredient content ensure the effective and automatic removal of algae, green growth, lichens and fungi that Nell Ultra is known for.
Officially registered: Nell Ultra green growth and algae remover is a biocide: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-111940
Long-term protection with deep effect: our green growth remover offers the self-acting effect as well as the proven long-term protection. The special formula penetrates into the capillaries and removes even the smallest residues of algae, lichens and fungi. This means that surfaces treated with Nell Ultra remain protected from new infestations for up to 12 months - not only looks beautiful, but also saves time and money.
In harmony with the environment: the Nell Ultra green growth remover and algae remover meets even the highest quality standards thanks to its sustainability. Since the environment is important to us, we have developed a green growth remover that is chlorine-free, acid-free and contains no animal ingredients. The selected ingredients can also be completely biodegradable and are safe for humans and animals.

84,90 €
03

ABACUS

ABACUS® Nell Ultra Green Growth Remover & Algae Remover Concentrate, Extremely Strong! Removes Green Growth & Algae Automatically with Long-Term Protection - for Stone, Facade, Patio, Roof - Nell

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9.4

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

AUTOMATIC CLEANING: The Nell Ultra green growth remover & algae remover removes the green coating by itself and is extremely effective - you can sit back and relax while it does the work. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
Very high yield: the Nell Ultra green growth remover has one of the highest active ingredient content on the market with 40% active ingredient. This makes our green growth remover not only extremely effective, but also very economical - with one litre of our algae remover, up to 100 m² of area of algae and green growth can be freed. This exceptionally high efficiency protects the environment and your wallet without compromising on quality.
Versatile effective: our green growth and algae remover is a real all-rounder and can be used on all waterproof surfaces. It is the perfect helper for outdoor use and is ideal for removing green growth on patios, pavements, stones, facades, plaster, walls, gravestones, roofs, fences, awnings, WPC and much more.
Proven premium quality: our green growth remover has been removing algae and green growth throughout Germany for over 30 years and has proven itself - more than 2 million bottles sold speak for themselves. The combination of carefully selected ingredients and an exceptionally high active ingredient content ensure the effective and automatic removal of algae, green growth, lichens and fungi that Nell Ultra is known for.
Officially registered: Nell Ultra green growth and algae remover is a biocide: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-111940
Long-term protection with deep effect: our green growth remover offers the self-acting effect as well as the proven long-term protection. The special formula penetrates into the capillaries and removes even the smallest residues of algae, lichens and fungi. This means that surfaces treated with Nell Ultra remain protected from new infestations for up to 12 months - not only looks beautiful, but also saves time and money.
In harmony with the environment: the Nell Ultra green growth remover and algae remover meets even the highest quality standards thanks to its sustainability. Since the environment is important to us, we have developed a green growth remover that is chlorine-free, acid-free and contains no animal ingredients. The selected ingredients can also be completely biodegradable and are safe for humans and animals.

54,90 €
04

ABACUS

ABACUS® Facade Cleaner with Spray Bottle, Green Growth Remover for Facades, Plaster & House Walls - Automatically Removes Fungi, Lichen & Algae from Facades - Only 0.1 L per m², Nell Facade 5 Litres

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9.3

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

Works independently: simply apply the facade cleaner to the green coating on the facade. The facade cleaning is automatic. No pressure washer or scrubbing is necessary to remove algae, fungi and lichen from plaster or house wall.
Unique: Our facade cleaner has been specially developed to remove green growth such as fungi, lichens and algae from facades. The unique formula allows the facade cleaner to stick to plaster and house walls and allows a longer exposure time on the green coating.
Ready to use: the application of the facade cleaner is very easy and makes it the perfect green growth remover for facades. Simply apply the finished mixture to the plaster using a sprayer, brush or brush to remove fungi, lichen and algae from the house wall.
Proven quality: our facade cleaner automatically frees facades and house walls from green growth, algae, fungi and light lichen infestation.
Note: Nell Fassade is a biocidal product: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-109496
Long-term effect: our facade cleaner penetrates into the capillaries of the facade and removes even deep-seated green growth from plaster and house wall. Since even the smallest micro-organisms are destroyed, the façade is protected in the long term against the re-infestation of fungi, lichens and algae.
Extremely powerful: the facade cleaner is a real powerhouse and removes even stubborn green growth from facades. Even mould, black algae, red algae and lichens are easily removed from the house wall by our facade cleaner.

49,90 €
05

ABACUS

ABACUS® Facade Cleaner, Green Growth Remover for Facades, Plaster & House Walls - Automatically Removes Fungi, Lichen & Algae from Facades - Only 0.1 L per m², Nell Facade 5 Litres (1240.5)

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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.

Show more
Main highlights

Works independently: simply apply the facade cleaner to the green coating on the facade. The facade cleaning is automatic. No pressure washer or scrubbing is necessary to remove algae, fungi and lichen from plaster or house wall.
Unique: Our facade cleaner has been specially developed to remove green growth such as fungi, lichens and algae from facades. The unique formula allows the facade cleaner to stick to plaster and house walls and allows a longer exposure time on the green coating.
Ready to use: the application of the facade cleaner is very easy and makes it the perfect green growth remover for facades. Simply apply the finished mixture to the plaster using a sprayer, brush or brush to remove fungi, lichen and algae from the house wall.
Proven quality: our facade cleaner automatically frees facades and house walls from green growth, algae, fungi and light lichen infestation.
Note: Nell Fassade is a biocidal product: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-109496
Long-term effect: our facade cleaner penetrates into the capillaries of the facade and removes even deep-seated green growth from plaster and house wall. Since even the smallest micro-organisms are destroyed, the façade is protected in the long term against the re-infestation of fungi, lichens and algae.
Extremely powerful: the facade cleaner is a real powerhouse and removes even stubborn green growth from facades. Even mould, black algae, red algae and lichens are easily removed from the house wall by our facade cleaner.

48,90 €
06

ABACUS

ABACUS® Nell Ultra Green Growth Remover & Algae Remover Concentrate, Extremely Strong! Removes Green Growth & Algae Automatically with Long-Term Protection - for Stone, Facade, Patio, Roof - Nell

Show more
9.0

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

AUTOMATIC CLEANING: The Nell Ultra green growth remover & algae remover removes the green coating by itself and is extremely effective - you can sit back and relax while it does the work. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
Very high yield: the Nell Ultra green growth remover has one of the highest active ingredient content on the market with 40% active ingredient. This makes our green growth remover not only extremely effective, but also very economical - with one litre of our algae remover, up to 100 m² of area of algae and green growth can be freed. This exceptionally high efficiency protects the environment and your wallet without compromising on quality.
Versatile effective: our green growth and algae remover is a real all-rounder and can be used on all waterproof surfaces. It is the perfect helper for outdoor use and is ideal for removing green growth on patios, pavements, stones, facades, plaster, walls, gravestones, roofs, fences, awnings, WPC and much more.
Proven premium quality: our green growth remover has been removing algae and green growth throughout Germany for over 30 years and has proven itself - more than 2 million bottles sold speak for themselves. The combination of carefully selected ingredients and an exceptionally high active ingredient content ensure the effective and automatic removal of algae, green growth, lichens and fungi that Nell Ultra is known for.
Officially registered: Nell Ultra green growth and algae remover is a biocide: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-111940

49,90 €
07

ABACUS

ABACUS® Facade Cleaner, Green Growth Remover for Facades, Plaster & House Walls - Automatically Removes Fungi, Lichen & Algae from Facades - Only 0.1 L per m Nell Facade 5 Litres (7708.5a)

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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.

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Main highlights

Works independently: simply apply the facade cleaner to the green coating on the facade. The facade cleaning is automatic. No pressure washer or scrubbing is necessary to remove algae, fungi and lichen from plaster or house wall.
Unique: Our facade cleaner has been specially developed to remove green growth such as fungi, lichens and algae from facades. The unique formula allows the facade cleaner to stick to plaster and house walls and allows a longer exposure time on the green coating.
Ready to use: the application of the facade cleaner is very easy and makes it the perfect green growth remover for facades. Simply apply the finished mixture to the plaster using a sprayer, brush or brush to remove fungi, lichen and algae from the house wall.
Proven quality: our facade cleaner automatically frees facades and house walls from green growth, algae, fungi and light lichen infestation.
Note: Nell Fassade is a biocidal product: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-109496
Long-term effect: our facade cleaner penetrates into the capillaries of the facade and removes even deep-seated green growth from plaster and house wall. Since even the smallest micro-organisms are destroyed, the façade is protected in the long term against the re-infestation of fungi, lichens and algae.
Extremely powerful: the facade cleaner is a real powerhouse and removes even stubborn green growth from facades. Even mould, black algae, red algae and lichens are easily removed from the house wall by our facade cleaner.

48,90 €
08

ABACUS

ABACUS® Nell Ultra® Green Growth Remover 4L + Stone Cleaner Extreme 2L Removes Green Growth & Algae with Long-Term Protection in Minutes! Algae Remover Fungus Remover Lichen Remover Algaecide Algae

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8.8

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

AUTOMATIC CLEANING: The Nell Ultra green growth remover & algae remover removes the green coating by itself and is extremely effective - you can sit back and relax while it does the work. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
Very high yield: the Nell Ultra green growth remover has one of the highest active ingredient content on the market with 40% active ingredient. This makes our green growth remover not only extremely effective, but also very economical - with one litre of our algae remover, up to 100 m² of area of algae and green growth can be freed. This exceptionally high efficiency protects the environment and your wallet without compromising on quality.
Versatile effective: our green growth and algae remover is a real all-rounder and can be used on all waterproof surfaces. It is the perfect helper for outdoor use and is ideal for removing green growth on patios, pavements, stones, facades, plaster, walls, gravestones, roofs, fences, awnings, WPC and much more.
Proven premium quality: our green growth remover has been removing algae and green growth throughout Germany for over 30 years and has proven itself - more than 2 million bottles sold speak for themselves. The combination of carefully selected ingredients and an exceptionally high active ingredient content ensure the effective and automatic removal of algae, green growth, lichens and fungi that Nell Ultra is known for.
Officially registered: Nell Ultra green growth and algae remover and stone cleaner extreme are biocides: use biocidal products carefully. Always read the label and product information before use. / Nell Ultra Reg-No: N-111940 / Stone Cleaner Extreme Reg No: N-104852
Long-term protection with deep effect: our green growth remover offers the self-acting effect as well as the proven long-term protection. The special formula penetrates into the capillaries and removes even the smallest residues of algae, lichens and fungi. This means that surfaces treated with Nell Ultra remain protected from new infestations for up to 12 months - not only looks beautiful, but also saves time and money.
Extremely powerful: the unique formula of the stone cleaner extreme is extremely powerful and removes green growth such as algae from stones in no time at all without the need for a pressure washer. Even the most stubborn green growth such as lichens effortlessly removed from patios and paving stones thanks to the immediate effect.

79,90 €
09

ABACUS

ABACUS® Nell Ultra Green Growth Remover & Algae Remover Set, Extremely Strong! Removes Green Growth & Algae Automatically with Long-Term Protection - Algae & Green Growth Remover 1000 ml with Spray

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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.

Show more
Main highlights

AUTOMATIC CLEANING: The Nell Ultra green growth remover & algae remover removes the green coating by itself and is extremely effective - you can sit back and relax while it does the work. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
Very high yield: the Nell Ultra green growth remover has one of the highest active ingredient content on the market with 40% active ingredient. This makes our green growth remover not only extremely effective, but also very economical - with one litre of our algae remover, up to 100 m² of area of algae and green growth can be freed. This exceptionally high efficiency protects the environment and your wallet without compromising on quality.
Versatile effective: our green growth and algae remover is a real all-rounder and can be used on all waterproof surfaces. It is the perfect helper for outdoor use and is ideal for removing green growth on patios, pavements, stones, facades, plaster, walls, gravestones, roofs, fences, awnings, WPC and much more.
Proven premium quality: our green growth remover has been removing algae and green growth throughout Germany for over 30 years and has proven itself - more than 2 million bottles sold speak for themselves. The combination of carefully selected ingredients and an exceptionally high active ingredient content ensure the effective and automatic removal of algae, green growth, lichens and fungi that Nell Ultra is known for.
Officially registered: Nell Ultra green growth and algae remover is a biocide: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-111940
Long-term protection with deep effect: our green growth remover offers the self-acting effect as well as the proven long-term protection. The special formula penetrates into the capillaries and removes even the smallest residues of algae, lichens and fungi. This means that surfaces treated with Nell Ultra remain protected from new infestations for up to 12 months - not only looks beautiful, but also saves time and money.
In harmony with the environment: the Nell Ultra green growth remover and algae remover meets even the highest quality standards thanks to its sustainability. Since the environment is important to us, we have developed a green growth remover that is chlorine-free, acid-free and contains no animal ingredients. The selected ingredients can also be completely biodegradable and are safe for humans and animals.

39,90 €
10

ABACUS

ABACUS® Green Growth Remover & Algae Remover Ready to Use for Green Growth and Algae Removal - Nell Ultra 2 x 750ml (7283)

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8.6

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

STARTKLAR: Our green growth remover comes ready to use in a handy spray bottle with spray head.
Versatile: our green growth remover is chlorine-free, biodegradable and very material compatible. It is suitable for cleaning patio slabs, balconies, caravans, garden furniture, boats, gravestones and much more.
Self-active: the Nell Ultra green growth remover and algae remover works independently – no scrubbing or rinsing of the treated surface necessary.
Proven quality: our green growth remover automatically frees surfaces of green growth, algae, fungi and light lichen infestation.
Note: Nell Ultra green growth & algae remover is a biocide: use biocidal products carefully. Always read the label and product information before use. / Reg number: N-100338
Deep effect: the green growth remover penetrates the capillaries, thus protecting against new infestation of green growth, algae, fungi, lichen.

24,90 €