just last week, i recieved my first octo. he was quite healthy and moving about in the bag but when i put the bag in the water, a few minutes later, it completely calmed down and barely moved. i didn't even open the bag yet, i just let it float on top. the water is about 72-75 deg. after about an hour of slowly putting some tank water in the bag, i released it in the tank and it wasn't doing very well and a few hours later it died. this week i got another one and the exact same thing happened. does anyone know why my octo's keep dying?