not to be the fish police or anthing, but adding livestock to correct a problem (ie: CBB for aiptasia) may only work out as a temporary solution. I did that once, and wound up killing the CBB, as all he ate was aiptasia and not prepared food...when the aiptasia ran out, so did he...
they are beautiful fish and I felt really bad it died...just have to be careful when trying to resolve problems like that...Good luck with the shrimp, I hear they are beasts with those little nuisance nems..