One of the most experienced growers I know taught me this! Gotta catch him in between flood drains though . Honestly crazy to me penny. Lot of these big time commercial growers still are learning this lesson the hard way... lucky for me I had a talented clown to learn from!Environment is priority #1
when i was first starting out i was paying all the attention to the plants and the lights, and the medium. when i came to 420 i quickly learned that 25% humidity is not ideal for vegging. then came the real challenge. all the stuff i had to buy to get into a comfy space was crazy. still trying to dial in the perfect room.That's exactly it. With a well balanced environment, above ground and underground the light source is just an engine to drive everything.