I've ordered from ReefTown 2 times now. Both times my Berghia arrived alive and well, and within a month they cleared my tank of Aiptasia. I've ordered small amounts 2 to 3 Medium Berghia, however in my nano tank (20 gallons) they did very well, laid eggs, and reproduced, very quickly. They took out the all the Aiptasia very quickly before they had time to sting my corals. Very Satisfied and I will be back again if the Aiptasia arrive again on another coral....