Non agressive hermit crabs

[gregzz4]

Hey Rick,
I agree with Dearth as to your battle with cyano. You'll need to manually remove it/siphon it out.
As for hermits, I have always had good success with red scarlets.
For me, they are rock/sand cleaners but leave everything else alone.
Although they are bigger than some, they are great for a reef.
I've had issues with blue legs and left hands killing each other and snails, but not these guys.