Biorb 30 Life: clean up crew, corals?

[Nykolay]

I'm sating up an 8 gallon coral reef marine tank (probably no fish). I know I know... It's way too small and what's up with the Crushed Corals.
I don't care I can siphon it and clean it no problem. I just want it lol)

My question is:nerd::
- Since I don't really have experience with CC - what are the best clean up crew for a tank this size? More unique creatures the better :wink:
- What are the most unique & hardy corals for a tank this size?

Any more suggestion the better.

Can't wait to make it awesome!