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Hey there friend I would love to offer you some advice to help you out along your path to learning to grow if that would be okay with you? So cannabis plants love heat and humidity. It is the buds that hate it, If we capitalize on this in veg we can get much more vigorous and healthy growth from our plants if we aim for 80-84 MAX, In veg & early flower we want no more than 9 degrees less when the lights go off. We want to keep our temperature gaps in veg and early flower nice and tight between lights on and lights off. If we allow for more than 10 degrees less at this stage with lights off it will signal the plants to stretch. We do not want that, I would look to warm your room up with lights off temps. This goes for autoflowers as well.
As I stated earlier in veg & early flower we want our temp gaps tight. Once our plants finish growing vertically by weeks 4-6 of flower we want to open that temp gap up beyond more than 10 degrees less with lights off. Instead of causing stretch, the response has now changed & the plant will now send extra energy into the budding process and resin production. Also growing buds at too low of temps we will lose out on a lot of size but they will be dense & caked. Too hot & they will be big but very airy and prone to fox-tailing and have much less cake. The best of both worlds seems to be growing buds at max temps of 77-80 lights on & slowly widening the gap beyond 10 degrees less each week with lights off once your plants have finished their vertical growth. With autoflowers you have to kind of watch for it to finish its vertical growth then begin.
Look up VPD, Vapor pressure deficit and how it relates to growing cannabis. All new growers should learn this right away, Also if you have not gotten them yet get yourself a good PAR meter & a thermal laser temp gun like the fluke 62 MAX. These pieces of equipment will help you grow to your plants needs much better and get the most potential out of your lights. If you have any questions please do not hesitate to ask I am always around to help new growers out! Check out my diary of 200 lights 7,000 plants and follow my profile I will be putting out tutorials on my youtube channel soon aswell. Keep up the good work friend & happy growing!
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