Hi! I wanted to get your thoughts on how high of GPH aquarium pump ( Not an overhang or Canister actual pump) should I get for my 55 gallon fishtank running with a Marineland C220 Canister Filter. I want to run a secondary sump or even DIY canister, I was just wondering if I should go over 500+ GPH or would at least 300 GPH be enough? Thanks for your input, Greatly appreciated! The fish in this tank if it mattered is a Jaguar, 2 Jack Dempseys & 2 Firemouths. This is a grow out tank in case anyone decides to yell at me for putting a Jag in a 55g 
