I have been growing marijuana for about 20+ yrs. Outdoor and indoor. Things have really changed these days. LED’s instead of the OLD,BIG and very hot. We all had our ways in the day and grew some good weed. Nice grow tents with full climate control. I can sit at work and make adjustments on my cell phone,bluetooth and wi-fi connection,SICK! There are alot of LED lights out there now,and some damn good ones too. BUT,some are way overpriced! Spiderfarmer to me is #1 for the price,and quality…Now we got all the scientists studying marijauna. Like dr bruce bugbee…i impliment hos findongs on VPD…makes alot of sense. .0.8-1.5 for veg and 1.1-1.5 for flower. Opens the stimata. And does come down to genetics and strain. They are all require different temps and humidity. Some do not like HOT at all…leaves will tell you. Just gotta roll with it,see where it takes ya! Not rocket science really,well marijuana does grow different than other weeds and plants. We learned alot of it in science class as kids.grade 7 and 8. Happy growing. Always here to help if I can,just reach out.we all learn from each other,i will be asking questions too. Your always learning. Im a fitter/welder too.29 years…and I still learn from other’s…someone will always come along and show you something you did not know,or didnt even think of. Just the way it is