Not sure what kind of algae this is. Looks like black dots.

henrym28

Member
Jul 10, 2022
13
Fort Lauderdale, FL
What would be the best way to confirm what kind of algae this is? I'm noticing it at night when the pool light is on. It's a bit concerning as I've seen it multiply.

I'm noticing this is only in the shady side of the pool.
 

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How often do you brush the pool?

Can you scrape it off and rub it on a white paper towel? What color do you get?

Post your water chemistry, preferably from your own test kit, in the format:

FC
CC
pH
TA
CH
CYA
 
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