What kind of lighting do you think i need for my growbox? i have a single cfl putting out 2700 lumens right now and just started growing on mar.1st i wanted to upgrade to a 400 watt hps in time ofr flowering, but i wwas thinkking that might be too hot. my area is a ~4.5 foot tal cylinder about 2 feet diameter (Picture attached) Please give me your best oppinions.
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