I think by restriking he means light bouncing off the dual reflector (such as the GLO fixtures with single reflector) and cancelling out light that would have been reflected more efficiently by an individual reflector for each lamp. Sort of like the power compacts wasting light because they are doubled over and part of the tube sends light at the other part of the tube instead of into the tank where you want it. Does that even make sense?? Hope so..
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