yellow tangs have green stuff on them

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subparracer

Feeder Fish
MFK Member
Jul 14, 2012
39
1
6
west virginia
I have two yellow tangs in a 55g tank. I'm going threw an algae bloom but My yellow tangs have green spots on them. so what I'm asking is what is it, is it bad, and how do i get rid of it.
thanks
 
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