Help ID this algae ?

[JohnnyUngats]

Help ID this algae or possibly hydroid ?

I have this algae or hydroid growing in low light areas, only on my rock. It appears to be gray or very light brown. It seems to stay short (all under 1 cm, mostly around 5mm long. It's soft and thin with "Y" shaped branches. It has not been aggressive in expanding it's territory, but I noticed it was able to secure a position on some nice purple coraline patches. I would say it looked like tiny gray plant roots. Could it lead to trouble ? Thanks for any input.

 

[JohnnyUngats]

Anyone have any ideas ?

Has anyone seen this before ? I've only run across one similar thread with no answers there either.....

 

[Widdy]

If I had to take a guess, I would guess it's a form of turf algae.

 

[JohnnyUngats]

Hmmmm.... I'll have to look closer at some of the turf pictures. I just cant seem to get a positive ID. Here's another photo, but blown up. Again, these are waving in the currents, so they are pretty soft and smaller than a cm or 1/4 inch long.