I have a 29 gallon tank with an all gravel substrate. I will not be adding CO2 or fertilizer. My tank has been set up for more than a year now. How do you think these plants would do? Java Moss, Java Fern, Hornwort, Water Sprite, Corkscrew, Anubias? If there are any others that would do please recommend them for me. Also, how deep do you plant them in the substrate?