thanx everybody for the warm comments.
currently i'm getting help from the sunlight since i dont have sufficient lighting, i only have 2x 40watts bulb installed.
additional plants are based on what the java mosses behave, if successful then i'll definitely add more. but for now limiting my choices to low light plants. like dwarf vallis, corck screw, java fern, anubias.
am also considering ocelot and some hairgrass, if i come successfull.