Unlike any other natural Aiptasia control methods, Berghia chew down from on the rock, eating every bit of the Aiptasia.
 
Acclimation:
The water from every tank will be slighty different  and as the berghia are sensitive you will need to get them used to your tanks water slowly. unscrew the lid of the container pour half the water out and gradually add small amounts of tank water untill the pot is full again, making sure to keep the pot at the same temp as your tank. 
 
Releasing:
Ideally wait until the lights are off on your system, find a quiet corner in the tank with aptasia near by and place the pot down, allow the berghia to crawl out at their own pace, alternitively you can use the pipette provided to suck them up by gently shooting some water at their foot to loosen them then suck them into the pipette.
NEVER PLACE DIRECTLY ON THE APTASIA, THEY WILL GET EATEN.
 
Added Protection:
Berghia are at their safest when they have eaten as they then take on the sting defence from the Aptasia. you will notice when they have eaten they turn a brownish colour.