Float the berghia container in your tank or sump for half an hour to temperature acclimate the berghia. Then carefully remove about half the water from the container and very slowly add tank water to the jar over the next half hour. Repeat the process one more time – empty half the container water and very slowly refill with tank water. Please turn off all flow in your tank before adding the berghia. This will keep them from being blown around initially. Leave the flow off for two hours to let them get used to the tank before turning it back on. The berghia should begin perking up (starting to move their antennae, etc., but maybe not moving around yet. Go ahead and add the jar to the fish tank and let them crawl out on their own, or if you prefer, use the enclosed large-tip pipette to gently transfer them to your tank. Please put them near an aiptasia, BUT DO NOT PUT THEM DIRECLTY ON AN AIPTASIA. If you put the berghia directly on top of an aiptasia, the berghia will get eaten. Berghia are nocturnal, so don’t be surprised if you don’t see them during the day.