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The heat inefficiencies (IR) in MH and Fluorescent bulbs are about equal to the peak inefficiencies in LEDs (mostly the blue peaks) except for that most of that IR is quite necessary and not all that inefficient. It takes the same input watts to produce the same radiated watts. If somebody now is using 100w, for example of LED, they could have been using 100W of T5 or MH all along.
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