ID Help, should I remove?

[torombolo]

Hi reefers, I need some help, Im in the process of upgrading after my Reefer 170 cracked on the back. I wanted to stark a big tank from scratch and take my time but found this 185 BF locally that I wanted to clean, re seal, cycle all clean rock and new sand, but is currently running with some corals and livestock.
I can identify the mushrooms which have taken over the tank, the toadstool, maybe a sea urchin I think I see.
Anything else you could ID for me please?….
Also, can mushrooms be removed from rocks without harming them?

Thanks in advance for tour help

 

[WalkerLovesTheOcean]

Get closer pictures. I can't see anything in that photo.

 

[Uncle99]

Tons of cabbage coral.
You’d have to kill the rocks.

 

[Fish Styx]

Agreed. Closer pics would help a lot. I can, however, make out what appear to be two Sinularia sp.

 

[torombolo]

Thanks for the responses

 

[torombolo]

Dont have anything closer sorry