ABACUS® Nell Ultra Green Growth & Algae Remover Concentrate, Extremely Strong Automatically Removes Green Growth and Algae with Long-Term Protection – for Stone, Facade, Patio, Roof – Nell Ultra, 4 x

Price: €69.90
(as of Jan 16, 2026 13:49:54 UTC – Details)

Product Description

Algae killer – Algicide – Algenex – Algaecide – Algae Remover – Fungal Remover – Lichen Remover – Fungal Killer – Algae Stop – Green growth remover.

Nell Ultra 4 x 1000 ml

Algae, lichen and fungal remover.

Nell Ultra independently removes algae, lichens, fungi and green growth from tiles, stone, masonry, plaster, washed concrete slabs, gravestones, pebbles, monuments, wood, roof tiles, artificial and natural slate, terraces, stairs, window sills, awnings, privacy screens on balconies and many other surfaces. Nell Ultra is chlorine-free and biodegradable. Nell Ultra is not a weed killer. When applying, make sure that plants are covered. If the product accidentally comes on leaves, the plant does not die, but only the sprayed leaves turn yellow.

Application:

Apply Nell Ultra evenly to the surface to be treated on a rain-free day. When using a sprayer, mix Nell Ultra in a ratio of 1:5 with water. When applying with a watering can, mix 1:10 with water. Do not rinse with water. The treated surface only after drying (approx. 1 hour).

Algae will disappear after 2-3 days. Lichens and fungi disappear after approx. 6 months.

4 x 1000 ml Nell Ultra Just spray on, works automatically. With long-lasting effect. Highly concentrated. 1 litre = max. 100 m².

Nell Ultra

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Nell Ultra

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Nell Ultra

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Nell Ultra

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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.
Automatic cleaning: The Nell Ultra Green Growth Remover & Algae Remover removes the green plaque on its own and is extremely effective – you can sit back and relax while it does the job. The automatic action of the green growth remover frees patios, walkways and other surfaces from unsightly green deposits without tedious scrubbing and cleaning.
All-round 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.
Very high yield: At 40%, the Nell Ultra Green Growth Remover has one of the highest active ingredients on the market. 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.
Long-term protection with deep effect: In addition to the automatic effect, our green growth remover also offers 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 are protected from new infestations for up to 12 months – not only looks beautiful, 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.
Officially registered: Nell Ultra Green Growth & Algae Remover is a biocide: Use biocidal products with care. Always read the label and product information before use (English language not guaranteed). Reg. no: N-96059.