Help! Strange white stuff on zoa polyp

[Gil2Gil]

Hey,

 

All my water perimeters are perfect, nothing has changed. Except adding a fish and shrimp.

 

But tested my water today after a water change yesterday and I'm still at perfect.

 

This frag has been growing the most, almost a polyp a week. What is this algea? Fungus? On the polyp?

 

It's still opening, just has this weird stuff on it now.

 

Thanks for the help!!

<a href="http://s1376.photobucket.com/user/jongilmusician/media/E6C9722D-0242-4923-8B29-41E1DD657F20_zpsbjemek3t.jpg.html"target="_blank"><img src="http://i1376.photobucket.com/albums/ah29/jongilmusician/E6C9722D-0242-4923-8B29-41E1DD657F20_zpsbjemek3t.jpg" border="0" alt=" photo E6C9722D-0242-4923-8B29-41E1DD657F20_zpsbjemek3t.jpg"/></a>

[Gil2Gil]

Won't give me permission to delete. Sorry.

[Sunstar]

try giving the plug a dip in coral revive. Watch teh spot if that is what you are referring to.