ID these critters

[Vgyoung]

Can anyone identify these two critters? The first (clear tube one) looks to be a sponge? I have no idea about the second but it's growing directly on the skeletons of some of my corals particularly my candy canes. Any help would be great. Are they harmful?

http://prntscr.com/m12z5g
http://prntscr.com/m12zbb
http://prntscr.com/m12zh1

 

[Anemone]

First one is sponge. Although the second picture is hard to really tell, the second and third look like foraminiferans (forams for short). None of these things are problematic.

Kevin

 

[jlmawp]

+1 to sponge for #1.

#2 looks like hydroids to me.

#3 also looks like hydroids, but that one is tougher for me to see. I always thought most foraminiferans were pink or purple with thicker bodies, but I can definitely be wrong about that.

 

[Vgyoung]

What will kill the hydroids? It looks to be over taking a few polyps on some of the trumpet.
https://prnt.sc/m18czq