Ive been growing Big Bud for about a year now and in the past month or so a lot of my lower leaves are drying up and falling off. everyday a few more and my lower branches look all crazy. Could i need more ventilation. I use a 150 watt HPS in a 3'x3' box i built. has a smaller size fan and exit for exhust. some advise please
help my plants are acting crazy!!!
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