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.

These are 72" fixtures, and they were pretty easy to install. Today, I got a visit by Tullio Dellaquila and grabbed him for a quick interview to include in this video. He shares some pretty good knowledge.