New appearances id help

[Jlsardina]

White tubes on rock

Worm on acrylic

White sack on acrylic

 

[Jlsardina]

Also, I couldn't get a pic- but there were two little pink/red small bug things on the sand bed in my refugium. Any ideas?

 

[zambono]

looks like benign tubeworms on the top pic. They come with the liverock, no worries. They are just like feather dusters just much smaller, they filter feed.

 

[Jlsardina]

Thanks. Any idea on the last two pics or the pink bugs?

 

[zambono]

i can't see the pink bugs but if they are very little and crawl on the glass they are copepods. again they come in the live rock and the sign of a healthy aquarium. Inverts, and fish eat them, they also control algae.