Just found 2 crabs in my tank

[Aquattro]

Originally Posted by nanomano

if they turn out to be "not reef safe" (what crab is right) I would throw them in the sump then they can keep live rock clean

Unless I have a crab living in a coral and doing damage, I almost never remove them. Unless they're big, or you have really small fish, they're all mostly fine. My rule is unless they do something bad, they get to stay.