I wouldn't go so far as to say that reef bulbs are best for growing mass amounts of algae. They may not be optimal for plant growth, but reef bulbs can definitely be used to grow plants.
You have to realize that plants aren't nearly as picky about the "color" of the light as they are about the intensity. As long as you're in the 5000K-9500K region, you've got a good plant bulb. Choosing color will all come down to personal preference.
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Lumens and PAR discussion
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