Landscape & Urban Design Issue 62 2023 | Page 54

LANDSCAPING SERVICES

MANAGING ALGAE

and AlgoDirect . These remove floating , brown and thread algae . For the largest lakes , OASE offers Algolon and AlgoShield which fight algae in a sustainable and effective way .
Whilst string or brown algae in a lake is unsightly , an outbreak of bluegreen algae can be a serious problem . Despite their name , blue-green algae are bacteria rather than plants . More precisely , they are cyanobacteria . Not only does blue-green algae make lakes look unattractive , but the cyanobacteria also produce strong nerve toxins which are harmful to humans and can be lethal to animals .
No matter whether you ’ re looking after a large lake or a small urban water feature , the last thing you want is algae . With OASE you can plan ahead to prevent algae outbreaks and also manage it should the worst happen .
The first step in algae prevention is stopping phosphates from entering the water . When water runs into larger ponds and lakes it brings with it dissolved phosphates from the soil as well as fertilisers and agricultural treatments . If possible , construct a physical barrier to prevent this from entering the water . Self-contained features don ’ t suffer from this runoff , but the water that is used in them can still contain phosphates and should be treated accordingly .
If phosphates can ’ t be prevented from entering the water , removing them quickly and effectively is key . By reducing the phosphate levels you stand a good chance of preventing algae . OASE ’ s Phosless Direct quickly removes Phosphate from the water to below the 0.035 mg / l limit required for algae to grow . For the largest lakes we have a range of Professional treatments including Sedox and Sedox Speed .
As a last resort OASE can help you remove the algae . For water features we have AlgoFountain . Designed for features without fish , this treatment is safe for wildlife who might visit the feature . If fish are present in ponds there are several treatments available including AlgoUniversal
The best treatment for this dangerous algae is OASE ’ s CyanoClear . This not only destroys the cell structure of the bluegreen algae by oxidation , but unlike conventional methods , also neutralises the dangerous toxins produced by cyanobacteria . The water quality improves immediately with this treatment and the development of algae is stopped . CyanoClear breaks down without leaving any residue ; the final products of the chemical process are water and oxygen .
Want to learn more ? Speak to OASE today about managing algae – enquiries @ oase . com , 01256 896886
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