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If you are wanting all the fan leaves and branches to point up by themselves just add more lux needs at least 30,000 to 50,000 lux to convert a 400w MH gives 40,000 lumens per 1.0 cubic meter = 40,000 Lux that's 3.28 ft square box for vegging A 400w HPS gives 50,000 Lumens per 1.0 cubic meter...