keeping the nano up was not that hard. just do regular water changes weekly. i dont really know about my maroon. at night it sleeps behind the rocks. in the morning when the lights are on, it just swims around under the plate of the toadstool. sometimes it rubs against the toadstool and sometimes against the mushrooms. My lighting is the stock nano cube lighting which is i think 2x 36 watts PC's. i wanted to get a bubble tip anemone for it but i dont have the kind of lighting and the money for the lighting. so i was thinking maybe a bubble coral. i have not yet seen a good looking bubble coral at my lfs yet. all of them have their skeletons showing and are always closed until they are really small. thanks for looking.