Identify please. Dangerous?

[litebrite]

This is the photo. They are growing fast and spreading all over my tank super fast hitch hiked from on a coral I got last week.

I am worried they can sting. They are little tubes with what looks like a polyp for a head with little hairs that pop out from the sides. They get fat too like they are filling up with water.

I am scared they are "DIGITATE HYDROIDS" which I hear sting.

My photo of this <a href="https://www.aquariumadvice.com/attachments/photobucket/img_864867_0_5811f47b1b96330dc3e1ab177e79f6ef.jpg">CLICK FOR PHOTO</a>.

 

[roka64]

Hmmm, it's hard to tell. Can you get a better pic?
Do they look like anything on here:
Xtalreef

 

[litebrite]

The big ones are too far away to photo. They are growing at an alarming rate, so maybe in a few days I can take new picks as they double in size.

 

[Ziggy953]

Looks like harmless Q-tip sponges to me. I get them in low light areas of my tank and in the plumbing of my drain.

 

[litebrite]

Yes thank you. They are Q-Tips

Feeling so much better. I was worried they were were bad and could possibly sting. They grow so fast. Just over night they got fat and plump at the base looking like a valcano. I looked up Qtips and they were a prefect match. THANK YOU!!! They had to grow more to plump out.

 

[MaiNpHRaMe]

they look like maggots with a feathery looking antenas on one side huh? They hang from the feathery antena, i have them all over my bioballs but i cant get a good pic either. I think its a worm of some sort.