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Weiss Onex Concentrate: Algae Stain Remover

Removes stains caused by algae and the slippery green surface coating and organic stains found on shaded areas of paving, paths or patios and below trees. Also effective on roofs, walls and balconies.
Staining progressively disappears over a few days following treatment and active protection remains for months. Surface residues can be washed off with water or they will be removed naturally by weather and rainfall.

Technical Info:

Form: fluid
Colour: clear
Odour: slight
pH Value: ~7-9
Density: 1.0 g/cm³ at 20°C


For all types of natural stone, brick and concrete, with smooth or textured surfaces.

How to use:



Stored in the original sealed container in a cool, frost-free place Onex Concentrate will last for at least 12 months after delivery.