If you choose plants that can thrive without needing CO2 injection (Anubias, ferns, mosses, sagitarria, E. tenellus, Hygrophilas) you can have a pretty decent looking 1 ft tank... you won't even need a filter if you plant heavily and have a small fish/shrimp load. You won't need to dose much fert either; just have about 1.5 watts per gallon of light and do a partial water change every week or so.
I have repeated it before, but I really think these mini-tanks can do well with minimal equipment.
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