I replaced the VHO Super Actinics over my reef at last: These are XHO LEDs from ReefBrite, and do they ever deliver. The former bulbs were installed high above my tank, and my concern was "could XHOs provide enough light from that same installed spot?" I'm happy to say yes, and then some. Some corals down the sandbed have begun to get their former color back, something I didn't think was ever going to happen.