I would say that you might be able to get away with candy cane coral in that light if it was placed high in the aquarium and remember to spot feed it occasionally, due to somewhat low light it will need to get some additional food. You will also probably notice that it will have its feeding tentacle out a lot of the time looking for food to help supplement the food that is being provided by the zooanthelle. This feeder tentacle will occasionally be expelled and new one grown this is nothing to be concerned about.