Yellow Algae or Mustard Algae
What is it?
Mustard algae are a chlorine-resistant form of green algae that often resembles dirt or sand on bottom or sides of pool. These algae contain 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 Banish® as it kills all types of swimming pool algae.
Important Note: Brushing is extremely important when treating black algae because that protective layer has to be broken in order for the sanitizer or algicide to come in contact with the cells.