crabs?

[velocity]

i have looked at these reef package deals and i have noticed that they r like 20 crabs 2 brittle stars 1 shrimp and a few snails and stuff and do i really need this?
like the crabs and snails for the set up? its a 50 gallon and i want a FOWLR tank

 

[bang guy]

You will definately want the snails. The crabs can be useful for removing hair algae.

 

[blk822]

if you don't have clean up critters your live rock will turn into algae rock.