A friend does that in a shark tank he installed in I believe DC. I think it was a 5000 or 7000 gallon tank that's 16 feet long. He is fine now but he's really worried when the sharks get bigger how they will act when he's in there cleaning the tank. I forget the kind of sharks..... it's at some NBA players house, installed 3 or so tanks, 3K to 10K gallons