My 55G Tarraphyte Tank
Here's my experimental tank. Has a 150 or so Fancy Guppies and a dozen, small Panda and Orange Saddle Corydoras. Quite a bit of floating Pennywort and Anacharis and some low light plants.
No water changes. The emersed Chinese Evergreens take in the nitrogens from the dissolved fish waste and return pure water to the tank. I just trim the land plants to maintain good growth and top off the water that's lost to evaporation.
Very low maintenance.
"Fear not, my young apprentice. Just change the tank water."