Encrusting algae covering coral

Anyone else ever have this problem? (lower left corner)

I think it's the red encrusting algae, because I have that in other parts of my tank.

This is an older picture, but it's now starting to cover the Porites, and I can't get it off...

I really appreciate you help!
 
Thanks Matt.

I've gotta do it soon too. That stuff grows so fast! It's about twice the size as in that pic.

Under normal circumstances, it's welcomed.... :x
 
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