Dead aglae

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.
blackberry
Pool Newbie
Pool Newbie
Posts: 9
Joined: Fri 03 Apr, 2009 18:41
My Pool: 16x32 fibergrass inground ,sand filter. saltwater,hayward 1hp maxflow
Location: georgia

Dead aglae

Postby blackberry » Fri 03 Apr, 2009 19:21

How do you know if mustard algae is dead> I mean what does it look like after it dies


chem geek
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Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

Dead aglae

Postby chem geek » Wed 08 Apr, 2009 18:38

Whereas green algae gets bleached out and turns gray from the chlorine (and is, at that point, killed), yellow/mustard algae doesn't have a big change in its appearance so it is much harder to tell. You need to shock at a higher level (around an FC that is 60% of the CYA level) and be sure to get behind light nichers and put in pool equipment (poles, etc.) that could be harboring the algae. Remove it via filtration and vacuuming with subsequent backwashing (a skimmer sock can also help, if the algae gets stirred up).

As noted in other posts, you may have pollen and not yellow/mustard algae. Yellow/mustard algae prefers to grow on the shady side of the pool whereas pollen will settle into dead circulation areas even if they are in the sun.

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