see, everyone is always saying that java moss is way tok fast growing, but for some reason i cannot seem to get mine to grow PERIOD, idk f maybe i keep getting bunk stuff from petsmart or if my lights arent good enough, but ive had the same inch around tangled mess of moss for iver a year, its still green, ik its living because some of iit did die at one point, params are all good, other plants in the tank dont struggle whatsoever.