What is it?
Mustard algae is a chlorine-resistant form of green algae that often resembles dirt or sand on bottom or sides of pool. It contains compounds that act as a defense mechanism against the oxidation efforts of sanitizers, helping it survive even in highly chlorinated conditions. This factor can even create a large chlorine demand in certain situations. Mustard algae can be brushed away very easily, but returns quickly.
To kill mustard algae:
- Use Algae Complete® as it kills all types of swimming pool algae
5 steps to prevent algae growth:
- Maintain a sanitizer residual of 1-3ppm
- Do an initial and weekly application of a preventative algicide (such as Algae Complete®)
- Shock routinely
- Make sure there is adequate circulation and filtration
- Brushing surfaces is vital
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