Join Date: Dec 2012
Location: 92,960,000 miles from maximum PAR
No such thing as a "small closed-loop" system that is maintenance free. If you wish for a maintenance free aquarium, keep your fish in a large pond, lake, or river.
Here is my Kickstarter idea.
Raise fish in an environment they thrive in.
Raise plants in an environment they thrive in.
Use fish tank water (from water changes) to water plants.
I'm pretty sure this isn't a new idea (at all).