Most new growers crank their lights too high, and it actually slows growth instead of helping. Here’s what to remember: DLI (Daily Light Integral) = total light your plants get in 24 hours Too much light = stress and slower growth Stay between 300–600 PPFD during veg Keep humidity steady around 80% and aim for 85°F daytime temps for a thriving, low-VPD environment. You don’t need fancy gear, just a good setup and a little awareness of how DLI really works.