- Alkalinity: 8-11 dKH - Calcium: 380-450 ppm - pH: 8.1-8.4 - Temperature: 74-78°F - Difficult to keep - Description: Anacropora corals are SPS corals with delicate, branching structures. They require pristine water quality, strong lighting, and high flow conditions to thrive. Recommended for experienced reef keepers who can provide the necessary care and maintenance these corals demand.