Yes you do. To much can burn it up tho. Not like heat stress, but sunburn almost. It does produce more trichs in my opinion, but I don't do it with autos. There alittle too sensitive. But start about 3 weeks into flower. Add it at the hlf way mark of lights on, 6 hrsinto 12/12 cycle, stay for one hour a day. Then every 2 weeks add a extra hr to your timer. But keep it 2 ft above the canopy. No more than 4 total hrs a day. Waste of electricity lol
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