Real power draw is what matters, light power does not exist it's just marketing crap. Anyway, you need 30 to 40 led watts per sq ft. So, for a 4*4 tent you have 16 sq ft, which needs 480 to 640 watts. Both LEDS give you a total of 260 watts, at most it covers an area of 260/30=8.6 sq ft roughly a 3*3 tent.
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