This is a discussion on My own immersed set up attempt within the Other Aquatic Environments Journals forums, part of the Aquarium Photography category; -->
SO JEALOUS of that asian watergrass! If you didn't live all the way across the country I'd def buy some, that stuff is gorgeous.
If the leaves dry out, you may need to use an extremely mild fertilizer and water mixture in a spray bottle, and mist daily.
Not sure if you'll ever be able to flood it and add critters since the soil mixture is mostly peat. Peat is extremely messy. Still an okay medium to grow out plants to add to another tank, or as an experiment.
Looks good. Emersed setups are great for growing mosses and foreground plants like hairgrass. Good luck with the setup.