Here's a system I built for an elementary school in West Palm Beach. Turned out pretty good and it's compact. Took a day to put together and 2 weeks to get running with fish. It ran well. I used Goldfish. (curious if anyone has ran tilapia with a tank this small)
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Here's a quick down and dirty construction process video. (with campy music and all)
https://www.youtube.com/watch?v=_BHX9X_IjV0&t=99sI put more more detailed Instructions here on my Instructable.com entry.
https://www.instructables.com/Aquaponics-Mars-Colony-55-Gallon-Home-Grow-Station/Let me know your thoughts.
Thad