- Alkalinity: 8-11 dKH - Calcium: 380-450 ppm - pH: 8.1-8.4 - Temperature: 74-78°F - Easy to moderate to keep - Description: Wall Hammer Corals, a variety of Euphyllia, form a wall-like structure with hammer-shaped tentacles. They require stable water parameters, moderate lighting, and gentle flow. Ideal for aquarists looking for a distinctive coral display.