Are these hydroids?

[christinna77]

What are these? Hydroids? They're tiny and most of them are attached to grains of sand, but I also found a few on the glass. The tank is one month old and I've been seeding it with copepods and dosing phyto.

 

[cdemoss01]

BUMP! @Reefer Matt what do you think.

 

[Matt L]

BUMP! @Reefer Matt what do you think.

Could be, but I can’t view the video. Might also be feather duster worms. But it should be easy enough to remove them with tweezers if desired.

 

[christinna77]

Could be, but I can’t view the video. Might also be feather duster worms. But it should be easy enough to remove them with tweezers if desired.

Thanks! They don't have a tube, it really looks like a little flower. There's a lot of them on the sand, I'll try removing one for further identification.

 

[Matt L]

@vetteguy53081 may have a better idea as well.

 

[christinna77]

I took a better picture outside and it's green. Some kind of algae? The white is a grain of sand it's attached to.