Blue algae / lichen remover and method for removing blue algae / lichen from concrete objectsPROBLEM TO BE SOLVED: To obtain a blue-green alga and lichen-removing agent containing a specific acid and a solvent therefor, or further an algaecide and an antifungal agent as active ingredients, ...
Brush the area with a scrubbing brush. Use a circular motion and then scrub in rows to rub the stain remover in thoroughly. Rinse the cleaner with the hose. Spray the concrete pool wall meticulously to eliminate the algae stain and cleaner. Repeat the cleaning procedure if any stains remain....