So, I have some ideas for a very cool betta tank (no more than 10 gallons), but I don't want it cluttered up with equipment. I'd like to use a small canister filter that would be located in a base under the tank, but a water pump would be required for that, and all the small water pumps I can find are submersible. I feel like I must be missing some obvious solution. Can anybody clue me in?