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if your plants are very young it isn't an issue. However, if you go from 24 or 18 hours of light to 10-13 your plants will start to flower....
appreciate the responses. hope you're both correct. thanks!
I've grown outdoors in the past without a problem. this year i built a grow closet (4x4x8). 400 watt HPS, ventilation, excel temperature, only 5...