When I had my 10, I used a Aquarium Systems Mini-Jet 404. It has an adjustable flow rate also. Even the 606 would be better. It moves from 79-153 gallons per hour! And it's very small. HTH
I used a maxi-jet 600 in my 10 that was set on a timer to go on and off during the day. I also have a hang on skimmer that would circulate water too. Sally PS. Did Sarah tell you about my cardinals breeding...I have about 50!
A HOB filter like an aquaclear (with the media removed) can be another great option on this type of tank. Its a great place to grow a little macroalgae or put a heater.
I used a skilter and a aquaclear mini HOB powerfilters and removed the cartridges. Great place to put your heater, carbon, Kalk drip and adds very little heat to the tank itself compared to powerheads. Also it provided a more gentle swirling flow rather than a direct blast from powerheads.