This type of tank will need a little tending. The plants need trimming. The tanks are open to allow the plants to take in CO2
from the air, but the roots must be emersed in the tank water. Open tanks need to be topped off regularly, due to evaporation, but don't require water changes. I have this type of tank. It's been running for a couple of years and the chemistry is stable. The fish breed regularly and there are aquatic plants growing too.
The key to this type of tank is choosing the right land plant, aerating the roots and having a good fish load to supply the plants with the right nutrients. Lighting is important too, but room light is sufficient.