Hopefully this will not happen to you but the success rate of this coral in captive care is quit dismal. The lack of zooxanthellae means it gets all
of it's nutrition from direct feedings. Best suggestion is depending on how the coral came attached, place it in a moderately high flow area out of direct light. Also in a position so it does not allow it to attach to any adjacent rocks and such. It will make feeding it much easier if it is easily moved.
Although Zooplankton will benefit somewhat, you will need to rely moreso on phytoplankton as the main diet and preferabley live cultures in hopes of meeting all it's needs. Shelf stable product swill most likely fall short of it's needs.
When feeding, it will be best if you hang a HOB
breeder box or other container inside the tank that has little or not flow through it. Add the coral and then the food. This will allow for the coral to become saturated with the food particles instead of the hap hazard general water column feeding that will most likley not meet the corals needs. Once fed for a ¬Ĺ hour or so replace the coral to it's original position and discard some of the feeding water. Some can be let loose it the tank to increase the chance of casual feeding but too much random food will soon impact the water quality... Feeding in this fashion 3-4 times a week should greatly increase your success.