So what is this?

[jaxteller007]

Not the best after picture taking but this has been going on for a week or two. It's in an area that has pretty good flow.

It has been really cold here so the house has been closed up. I've heard that the recycled air during winter time can cause issues.

 

[dwest]

Not the best after picture taking but this has been going on for a week or two. It's in an area that has pretty good flow.

It has been really cold here so the house has been closed up. I've heard that the recycled air during winter time can cause issues.

Looks like cyano.

 

[jaxteller007]

Looks like cyano.

I thought that was a slime algae? This is more hairy like.