Hi, I'm new to ceph keeping, I just got a small vulgaris from toms Caribbean, mantle size is around 2". I acclimated him for an hour and a half and he seamed fine in the bag but when I released him into the tank he was ok at first but two hours later he's hanging by one leg from the side of tank not looking too good, is this part of the acclimation or is there something wrong? The tank is a 55 gallon, nitrate at 30-40 ppm, nitrite and ammonia at 0. The lights are out and I'm not disturbing him at all. Any help or info would be greatly appreciated, thanks.