What grows in my tank?

[Ewelina]

I must admit, I neglected the tank, since we got a new pet (pup) that took all of my free time. Now I'm coming across some troubles with the tank. Not only I lost a coral, but I have some things growing in it too. Please help me identify what grows on my corals and rocks and how to get rid of it if needed.
Pic #1. I'm asking about this branch, pink thingy on the side of the brain coral.
#2. Those thread/branch like things
#3. Those polyps on the finger coral (they look like anemones to me, but where would I get them from and why only on the coral?)
Thanks for all help!

 

[davocean]

Can you get a natural daylight pic or 2 so we can see some color detail?

 

[Ewelina]

Can you get a natural daylight pic or 2 so we can see some color detail?

 

[davocean]

OK, I think what you are talking about is that red, which looks like a macro algae.
I can't see anything else well enough, let me find a hitchiker ID link that might help you as you can see better in there than I can.

https://www.lionfishlair.com/hitchhikers-guide/

 

[reef lover]

I see some sort of red macro as well and some hair algae. Not sure on the polyps growing on the leather...need a.better pic.