I broke down my reef tank when I moved. I decided to setup a FOWLR tank at the new house. Therefore, I have 6 x Radion XR30 Pro generation 4 for sale. I cleaned them prior to storing them. I had 3 different tanks, so it’s hard to tell which light was used on which tank. However, I ran the same program as Top Shelf Aquatics & also supplemented the light with T5’s. $325/each shipped.