I'm looking for a plant that will do well growing emersed in acidic, soft, and nutrient poor water. Basically a bog setting. The plant should be growing from a depth of about 5-7 cm and then out of the water. Any tips?
Acidic water is ideal for plants. That's why getting a lot plants into a cycling tank is helpful to control the forms of nitrogen that dissolve in the tank water from the fish waste.
I emerse Aglaonema (Chinese Evergreen) in my tanks. The plants come in all sizes. I prefer those from 8 to 12 inches tall. Might work well in your case. I use them to maintain pure water conditions for my fish without doing the weekly water changes.