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If you seriously want to understand horticultural lighting and lighting theory, then this lecture is for you. If the Youtube link is altered, you may be able to find this video with the title "Cannabis Grow Lighting Myths and FAQs with Dr. Bruce Bugbee". Enjoy:
I have 2 LED 900W and 1 LED 300 W inside a 5x5x7 foot tent. Is that too much lighting. Even though they are LED it seems like too much heat inside. I use an exhaust fan and also have a oscillating fan inside. What is the best grow temperature inside a tent? My next question is this. I saw an article that said roots need oxygen for good growth. Has anyone here tried putting an air hose connected to an aquarium air pump inside the growing pot? If so, did you see any positive improvement? TIA for any input to these questions.