Sun Coral, Tubastrea faulkneri, is a hard coral that does not require much light. This species is bright orange in color and should be target fed at least every other day. They often spend much of the day closed up and open during the night, this is normal. Because of these unique feeding requirements, it should be reserved for an experienced aquarist. It is generally not suitable for most reef tanks as there may be too much light. They are generally peaceful towards other organisms and are best kept towards the bottom of the tank.