Euphyllia Glabrescens Ultra Green with yellow tips A Euphyllia glabrescens is basically quite easy to keep, even for beginners. The coral grows best if the water conditions are good, so that means that a small amount of phosphate and nitrate must be present, and of course the rest of the water conditions must also be in order. These corals feed on light (preferably T5 / high-end LED lighting) but can also be supplemented with different kinds of dust food, and of course also with artemia and mysis.