Hi everyone, what distance from the light to the plant is recommended to start the vegetative period? I see many different measurements on the internet. In this case, it's for some automatic Red Poison plants, with a 360W LED light.
Hard to tell take a look at the manufacturers recommendations. Ideally they have a ppfd map for the lamp at certain distances. This way u can dial in the daily light integral to the right amount. Ppfd of 150-200 umol/m2/s should be fine for seedlings with 18/6 light cycle. That would be a DLI of 10-13 mol per day.