Wrasse will kill them...to be on the safe side also keep them away from shrimps and crabs...acclimate and put them in when all the lights have been off for at least 1 hour.. Don't siphen them out use a fan brush thats used for painting canvas... (brand new never used) you can find them at michaels...also kill the water flow and make sure they don't float into an aiptasia or nem etc...actually try and drop them next to the aiptasia..