Small polyp stony corals, also known as SPS corals are a favorite among experienced coral hobbyists. Although these corals do require certain conditions in order to live and grow to their fullest, these hard corals build a calcium carbonate internal skeleton that forms mesmerizing shapes and makes up the bulk of the reef structure. Due to its skeleton, SPS frags require a consistent level of calcium and alkalinity to avoid weakening. They also require a good amount of light and high-water flow in order to meet their full potential. World Wide Corals has an unbeatable selection of SPS frags for sale that features practically every color imaginable. Although they can be challenging to care for, SPS frags are among the most rewarding corals to grow and observe. Browse our selection of SPS coral below.