I'm 8 weeks in, from seed, in a 3x3x2 tent, viparspectra LED 300w, foxfarm soil & nutrients, 4" exhaust. On 12/12 for maybe 10-14 days. I've always been pretty good at growing other plants (tomatos, roses, annuals, sunflowers, whatever). I've added a 150w red led for flowering stage. So far, knock on wood, I've no problems, although the tent is a little warm I think (80F to 85F). I'm not sure how to lower the temp to maybe 75F? I welcome other suggestions.
I owned a viparspectra for my first grow 300w not bad to start but it does run hot not the best yield/watt. Led running up to 85f is fine just not any higher. Look into rapid led,Pacific grow lights, or timber grow lights if you want better lights less heat/dimmable options/custom builds. I've used all those companies great results flower/veg. Also you can all any of the companies they will break down what you need to look up to build w/e works for you. Good luck Sent from my SM-G930V using Tapatalk