I have my new seedlings which are about two weeks old 24 inches away at 40% what would be a good time to switch them over to a higher percentage and possibly a different distance away . They are doing phenomenal right now but I’m sure I’m gonna have to give them some more juice soon
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I planted autoflower seeds that germinated last night. First night of the grow. Is the appropriate setting on the ROI 680 40% at 24 inches? For the first several hours, I had it up to 80% / 18 inches, but concerned that was too much and lowered to 40% at 24 inches after watching this. Thank you.
You can start lowering the light but they will grow up as well so you probably won't need to lower it much. I took measurements and made a video on ROI-E680 PAR measurements. This info should help you: Seedlings/clones/mother plants - 40%, 24 inches away = ~300 PPFD Early veg - 40%, 12-inches away = ~500 PPFD
Late veg - 80%, 24 inches away = ~750 PPFD Early flower - 60%, 12-inches away = ~800 PPFD
Late flower - 80%, 12-inches away = ~1100 PPFD I've actually been keeping it at 60% for late flowering and going down to 6-inches away and my plants take it fine.
PAR test video on the RIO-E680: