light intensity for clones right after transplant ?

100-300 PPFD over 18h for seedlings -- when you consider size of coverage it's much less umol/s photons than it sounds Start with what tehy suggest, then react to any stretch with more light or closer hanging distance is an option if coverage is not reduced or made less even in a significant way. If you've already transplanted seedings, they are going to need closer to 500-600PPFD over 18 hours soon. I'd assume you need to start ramping up, but in the end you let the plants dictate and react to them. Take notes for that particular light and stage of development of plants - overall size. robustness and number of nodes. Preempt any stretch "next" time. length of internodes is your guide (aka the stem between nodes).