The Green Bubble Coral has large water filled bubbles (vesicles) covering a large sharp sepia. It resembles grapes and expands mainly during the day, whereas, at night the vesicles are deflated. The Green Bubble Coral is hardy but takes time to acclimatize in a new environment. It is moderate aggressive towards other animals, and has fairly potent sting. Since, its sweeper tentacles are not long, the Green Bubble Coral can be positioned fairly close to other neighboring corals. But we recommend providing them a plenty of space so that it can extend its tentacles without affecting any neighboring corals, and can grow freely. It prefers low to moderate water currents, and be sure not to place it in any direct current. Doing so will cause the coral?s vesicles to remain closed, that will eventually result in death. It thrives well in a temperature range of 75-84 degrees Fahrenheit, and requires moderate to strong lighting for its proper growth and developments. The Green Bubble Coral is photosynthetic, and manufactures its food and gets the nutrition from light. Additional supplements like shrimp or other meaty foods may also benefits the Green Bubble Coral for its continued health growth. We also advise you to maintain and regulate the correct calcium levels in the aquarium, which is important for its skeletal development. The Green Bubble Coral is one of the most beautiful and easy to care coral, which makes a great choice for any beginner aquarists. If you are using florescent tubes included for lighting, it may be better to place this coral closer to the surface. You should be vigilant towards the over-growth of algae as it might cause damage or even death to the coral.