Black spots on toadstoolpolyps

FishRFriendsNotFood

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Hello,

What are these black spots on my toadstool (on the polyps)?
20200630_165221.jpg

It is in a high flow area. Maybe too much flow?
Thx in advance!
 

vetteguy53081

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May be infected tissue often caused by raising the intensity of light or installing a different light.
Did you by chance?

If this continues, you may have to dip it.
 

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