Floating red goup?

Picasso

Seahorse Whisperer
My little 10 gallon has red goo floating in it. I keep scooping it out but it's starting to really become a problem by sticking to my corals. What is this yuck and how to you get rid of it?

thanks,

catherine
 
Cyano maybe.But the only time I've ever seen cyano on the water surface was when it filled with bubbles and broke loose from the mat.
 
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