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 thrive, 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 coral 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 coral for sale that features practically every color imaginable. Although they can be challenging to care for, SPS coral frags are among the most rewarding corals to grow and observe. Browse our selection of SPS coral online below.