During the evenings, its sweeper tentacles can extend up to six inches beyond its base into the reef aquarium surroundings. It will sting other neighboring corals in the reef aquarium, therefore, it is best to leave plenty of room between itself and other types of corals. It is moderately difficult to maintain, but it is a popular coral that will thrive under the proper conditions. It will need to have moderate to heavy lighting combined with moderate water movement within the aquarium. For continued good health, it will also require the addition of calcium, strontium, and other trace elements to the water.

The symbiotic algae zooxanthellae hosted within its body provides the majority of its nutritional requirements from photosynthesis. It will also benefit from additional food in the form of micro-plankton or brine shrimp.

Approximate Purchase Size: Small: 1-1/2" to 2-1/4" Medium: 2-1/2" to 3-1/2"; Large; 3-1/2" to 5-1/4"