Marine Algae Cleaner


Our marine algae cleaner chemical is environmentally friendly, marine-safe and perfect for ridding steps, quaysides, masonry waterfront walls, and slipways of marine algae and green growth. With a normal dilution ratio of 1:10 this product is classified as non-hazardous to the marine environment and it contains no biocides, bleach or acids, is non-toxic and food-safe, users need no PPE in normal use.

The combination of powerful non-biocide cleaner chemicals acts as an algae remover and breaks down the bonds of seaweeds, algae, and marine growth on the substrate. This cleaner works by breaking surface tension holding algae and dirt to the substrate and lifting it off for rinsing instead of killing the algae.

On numerous occasions it has be proven to limit re-growth of algae infestations better than using sodium hypochlorite and it is ideal as a boat hull cleaner for yachts and boats.

Testimonial From Dalgety Bay Sailing Club, Fife, Scotland on this product: “We were most impressed by the test strip we did on our jetty which was very badly fouled, much worse than we would normally let it get.”

Especially effective on concrete and stone surfaces in harbours, yacht clubs and marinas. The marine algae cleaner is sold as concentrate in 5 litre or 20 litre containers and would normally dilute 1 part concentrate to 10 parts water. We also supply 200 litre and 1000 litre IBC containers.

Marine Algae Cleaner

When used as directed this product does not need an Environment Agency environmental permit for a Water Discharge Activity issued under the Environmental Permitting Regulations.

As the product is non-biocidal it also adheres to HSE guidelines for chemicals that land up in the sea or may cause chemical burns to humans as in this disturbing incident in the Western Isles. 

5 Litre – £27.50 + VAT Each or 20 Litre – £97.50 + VAT Each. For 1000 Litre IBT please email us.

A powerful and eco-friendly solution to marine algae growth problem areas that is also well priced and reduces the number of applications that harbour staff, marinas or contractors need to undertake – dilute our marine algae cleaner at 1 to 10 with water, apply generously, and brush in well to agitate with a stiff brush.

Please see our video here on how to clean a slipway with this eco-friendly chemical:


Do you need cleaning equipment or a pressure washer? Please see our cleaning equipment range.

40 Foot Water Fed Pole Brush              Petrol Pressure Washer Honda

Useful guidance from GOV.UK on slipways cleaning chemical use.

Please contact us to discuss your needs further at:

Acute Build Clean | 74 Bo’ness Road | Grangemouth | FK3 9BL

Tel: 01324 309100 | Email:

Marine Algae Cleaner