I finally got around to looking at this again the other day. I opened the case rand what I found looks like just two leds that seemed to have silicone holding them and the reflector in place. (The leds were mounted to small boards...but there wasn't anything else inside the case.) Each of my reef brites has two leds which appear to be wired in series.
I'm guessing that the two reef brights could be wired externally into some sort of dimmer(?) and then wired to a single power supply?