Acro feeders or worms?

[bct15]

I got a new acro the other day and it has had what I thought were a ton of feeders sticking out, but after a closer look I'm a little confused. Typically when I see acro feeders they come out of the coralites by the polyps but these are coming out of the middle branches and some are very long (1/2 to 3/4 inch). Take a look at the iPhone pics and let me know, thanks.

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[Chameleon]

possibly hydroids...

 

[Chameleon]

more like definitely hydroids the more i look

 

[-Logzor]

Those are a type of filament that the acro sends out, I've seen these before on mine.