Need help ID stuff that grew in my tank

[Mina1227]

I'm not sure what this is it started to grow on the live rock.

This one seems like sponge growing around my zoanthids. They are closes up. How do I get rid of this?

This seems like tiny feather duster worms that is growing all over my tanks. How do I control this?

 

[criticalencore]

I can't tell from the pics truthfully. Try googling aiptasia or colonial hydroids? Does it look more like feather dusters (which is possible) or like small anemones with tentacles, and not so much fan looking stuff hanging off?

 

[Mina1227]

Here's a close up

 

[NanoReefWanabe]

the mini feather dusters will come and go with food..feed less and they will die off, feed too much and they will multiply…you need to find a happy balance. the pineapple sponges will function the same way..

the first pic i have no idea what it is…try turning off you blur lights for the pics…

the second pic looks like a polyp of some sort… possibly a zoo or a play, however possibly a pest anemone, like majano or aptasia..