Be careful and do some research as well on what you choose. .. not because they flouresce, means that they will be nice corals to have. .. in other words... looking for the special needs of the coral you want will led you to a better desicion, some corals, but not all, would probably take over in the tank and grow to a different rate than others... you might end battling a desicion on whether you have chosen the right coral or not in a future when this same corals fight for space in your tank. Hope you understand me and I explained correctly my point.