Bleached indeed, and I'm confident it's H. crispa. With very good conditions, you can bring it back to full health. You will want to provide bright light (reef quality), specific gravity 1.026-1.027, temp in the 78-82 range, nitrates very low, moderate water circulation. You didn't mention specs of your system, lights, filtration etc. That info would be helpful in providing suggestions on how to successfully keep it.