What are these ? Good or bad ?

[Ms.lachelle]

One of my snails died two weeks ago and just tonight I noticed this!

Also, I have other ones that came on my button polyp frag there are a few new ones the glow orange with my blue lights on

oh btw it is not open fully. Please help

 

[Tahoe61]

Looks like feather dusters, harmless.

 

[Ms.lachelle]

Looks like feather dusters, harmless.

Do they just pop up randomly?

 

[Tahoe61]

Yes, they area a very common hitch-hiker. Here is an ID guide for you.

Live Rock Hitch Hikers

 

[Ms.lachelle]

Yes, they area a very common hitch-hiker. Here is an ID guide for you.

Live Rock Hitch Hikers

Thanks I looked thee and couldn't find them what would they be under ?

 

[Ms.lachelle]

There*

 

[Tahoe61]

Look under Tube worms. If that is not the correct ID try to get a better image.

Worm Hitch Hikers

Look here as well. Also look at the Hydroids, I guess it could be hyroids.

LionfishLair.com - Hitchhiker Guide to your Aquarium

 

[Ms.lachelle]

Look under Tube worms. If that is not the correct ID try to get a better image.

Worm Hitch Hikers

Look here as well. Also look at the Hydroids, I guess it could be hyroids.

LionfishLair.com - Hitchhiker Guide to your Aquarium

Thank you so much! I recognized a few different ones I have in my tank !

 

[Tahoe61]

You're welcome.

 

[Dalmatia]

Looks like feather dusters, harmless.

Agreed 100%.
You got some cyano there too, should get that under control

 

[Ms.lachelle]

Agreed 100%.
You got some cyano there too, should get that under control

I have some in my tank but not in that picture that it seems to be like coralline