I am running gh 6/9 in coco just cut off the micro day 37. I changed the bulbs tonight I wonder if it may have been the problem as the was a dark side on the glass of both the bulbs I changed. Any ideas? Just doesn't seem right at all for the age and looks odd. I feed twice a day at sun up and sun down. No other problems on the plants looked amazing until they started budding and the buds just don't look right to me. Temps are fine 68-76.