The "actinic" bulbs in reef lighting come in two varieties (actually three.) There are 420nm "true" actinics (a/k/a "actinic 03"), which are more purple in color. Then there are 460nm actinics, which are more blue in color. In power compact lighting, a "dual actinic" is available, with one half at 420nm and one half at 460nm. None of these types of actinics actually have any special benefit to corals, they just provide better aesthetics. Don't know if any of these would be beneficial to freshwater plants, but they may look better depending on your taste. I prefer using the 420nm and 460nm together in my reef tank.
"50/50" bulbs are usually one side 10000K and the other side actinic. "Dual daylight" bulbs are usually 10000K on one half and 6700K on the other. I do not know that these are available in anything other than power compact.