That's the kit I would get. Did you order the xw, the xl, or standard? I'd go with the xw for a 2.5x2.5 . ( https://growerslights.com/collections/horticulture-lighting-group-quantum-board-led-kits/products/horticulture-lighting-group-260-watt-xw-quantum-board-led-kit ) but any of them will work...