Your corals look starving. Do you only have one fish? I only see a bicolor blenny. You can't have 9.3 dkh with 0 nitrate and 0 phosphate with a low bioload (fish poop works way better than overfeeding). Lower your dkh to 8 and get more fish. If your par has gone up since that par map, reduce it back, and keep it there. Don't tinker with your lights, stability.