A table on the Reef Brite showing the wattage and power supplies they come with. My 24" XHO came with a 60W power supply. The number of LEDs listed in the table appears incorrect, at least for the XHO as there are 1 per inch of fixture length. I just counted 24 on my 24". I think they are actually three individual LEDs, vice a single. One in the center then one on each side.
Info on the Current USA controller linked: