My setup currently is (3) standard 4-foot double bulb fluorescent fixtures.
Each fixture has one Phillips Cool Blue Plus bulb and one Phillips Daylight Deluxe bulb. The light spectrum seems pretty good and the plants are growing nicely.
Quite a far cry from my initial setup of just one fixture - the plants just sat there and turned yellow.
If you're going to go the fluorescent route, I would definitely suggest using multiple fixtures to get your saturation up.
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I could sail by on the winds of silence, and maybe they won't notice... but this time I think it would be better if I swim..
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