Bought a new Condylactis Anemone and a snail for my 28g tank yesterday. The tank is established and my Damsel fish is getting along fine, however when I introduced the anemone and snail to the tank, they both were dead by the next day. What happened? Did they go into shock? All the levels are fine and the fish is happy. Usually it takes a lot longer for me to kill things off, even if I am new to this hobby.