PS stands for small polyp stony and are typically considered best for more experienced aquarists. This is because they require high levels of light, medium to strong water flow, and minimal phosphates and nitrates. Because they grow quickly as a skeletal structure, they also require more alkalinity, calcium and magnesium to build with, and dosing might be required. Keeping consistent water parameters is also important as they can be easily stressed. There are some that easier to keep like most Montiporas, which are also fast growers. If you’re new to SPS and want to give them a try, it’s best to get one small inexpensive frag and see how it grows! For more information on SPS or any kind of coral, talk to an Into The Blue team member today!!