That’s part of itLight is the only thing I have gone back and forth on. I turn it up and down. Can't seem to get where I need to be. Plant doesn't seem to care. I am using a small grow, small tent, single spider farmer small light that I can adjust. I just go up and down. Honestly zero clue what I am doing on this first grow.
Bruce bugbee will be a godsend for ya, he’s got plenty of videos on YouTube, accurate science that he’s pioneered/help greatly with research.