thats a 1010 gallons and for sure good for some bullseye stingrays and I would think those small sharks, but for sure I'm not the one for shark info but someone will chime in soon. Are you building a pond or a tank or having one built?gsmokez;4144022; said:Basically I've got a couple more feet to spare around the tank if I build it to these dimensions: 9'x5'x3'