Every time I read a thread about a fish stuck to a power head, I think that the fish HAD to be sick to get stuck to a power head. I got back into town yesterday to find my scopas tang stuck to my vortech. His mouth was so far stick into the slits on the intakes his lips were almost touching the impellar. I thought he was dead. I turned off the PH and he stumbled off. Today, he's swimming around like nothing happened and is eating. I was out of town and not really sure how long he was stuck, but he's fine now. Weird... I now think I should question whether or not a fish has to be sick to get stuck to a powerhead...