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Yellow (Mustard) Algae2020-03-12T04:08:18+00:00

Answers to Basic Pool Questions

TRADITIONAL CHLORINE POOLS

THE SYSTEM ADVANTAGE

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 defence 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 MSA II as it kills all types of swimming pool algae and resistant algae

5 steps to prevent algae growth:

  1. Maintain a sanitizer residual of 1-3ppm
  2. Do an initial and weekly application of a preventative algaecide (such as BACK UP Algae Inhibitor)
  3. Shock routinely
  4. Make sure there is adequate circulation and filtration
  5. Brushing surfaces is vital