Possible 150 gallon shark pond

Would the 150 gallon Rubbermaid stock tanks be large enough, they are roughly 5x3x2. The shark(don't know which would be best quite yet) would be the only inhabitant. Would use a Rubbermaid trash can as the filter, using lava rock as biological media, leaving the tank empty except for some pipe for the shark to hide in. Any red flags? SHARK OWNERS HELP PLZ