Rose Gold HammerLighting: Hammer corals prefer moderate lighting, typically between 100 150 PAR. Gradually acclimate them to new lighting conditions to avoid stress. While they can tolerate higher light levels, they may display better coloration under moderate light. Water Flow: Moderate to strong water flow is recommended for hammer corals. The flow should be sufficient to keep the coral clean and sway its polyps gently, but not so strong that it causes the polyps