Are those flatworms on my favia?

Ghrommi

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There is a dozen or so of what seems to be flatworms on my favia.
There don't seem to bother the coral at all. In opposite, it looks very healthy. And considering the number of them, it is not a recent development.
I am not sure where they came from.
What should I do about them? Dip the coral few times? If there are so many of them already, does it mean they are everywhere in the tank? I cannot find any, but they are small.
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Mibu

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A dip won't do much if they are everywhere.
Here's an article from a member who got rid of his flatworms with peroxide
There is flatworm exit, or some wrasse who eat them.
 
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Ghrommi

Ghrommi

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Thanks for the replies.
I will do a dip for now, and if that does not help, look into peroxide and flatworm exit.
 
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