Algae ID

[Sprinting]

I noticed a bunch of these little things growing on the glass of the Refugium compartment in my sump. I have ulva and gracilis in there, but this doesn't look like those macroalgae to me.

Please help ID. Thanks!

 

[Jekyl]

Fuzzy and blue

 

[Sprinting]

If this doesn't help I can take another pic

 

[Sprinting]

Here's two during the day!

 

[Sprinting]

I finally got a good pic!