Hi, I'm new to salt water tanks but I have had fresh water ones for almost 10 years. I have a snowflake moray and I heard how they can sometimes leap out of the tank. I made sure there were no openings that he could get out of (hes about 10 inches long), but he swam up my filter! I was scared that the motor might hurt him or something so i immediately turned it off and dumped the water back into the tank. Is this common and can it hurt him? If there is a danger with this how can I prevent him from swimming up in it? Please let me know asap. Thanks

John