Identification of flower things and white tube/goo

[Sarabeth3412]

Hi! Still new to the hobby and I’ve done a lot of research but I haven’t been able pinpoint these things as there are people saying different things so I figured I’d ask you all more experienced people. The first thing are small flower looking things appearing throughout my coral & on the rockscape all over. The 2nd thing are long white tubular things that are everywhere on my rockscape. What are they? Are they good/bad? Pros/cons. if they’re bad, can I manually remove them? Are they hitchkickers or do they just grow? I appreciate all the assistance and knowledge!! Thank you

 

[Heatherhigg]

Second image is a sponge, first I’m gonna say some form of feather duster. Both are not harmful and you will probably aggravate the coral more by trying to remove them. If something isn’t causing a problem my motto is to leave it alone lol

 

[Smirkish]

Guessing, but first look like colonial hydroids and second is possibly tunicates, or sponges, I am thinking.

 

[MaxTremors]

First one is hydroids, they should go away on their own. Second looks like a harmless sponge.