Spring-Summer Second Run Mixed Strains

Thanks you all for your answers, I could find useful input in all of them. I bought a lux meter and did some measurement, and after some tests I decreased the distance of the lamp. I searched a bit the lux values and found some ranges: - clones and seedling --> 5000-7000 lumen - veg --> 15000-50000 lumen - bloom --> 45000-65000 lumen Now the distance is 27 cm for HB and 35 for DSD1, with around 57k lumen I think I can decrease further, heat does not seem an issue even closer (now the 15.2cm in the specification seems a bit less science fiction). But anyway, will do some more tests and try to listen to the plant.

It doesn't look like botrytis because the leaves are burnt and not just dying and gone floppy. Is it possible that when you were feeding a drop landed on those leaves? Nutrient rich water becomes more and more concentrated as the water evaporates and can easily burn your leaves and seeing that it's in isolated spots, that would be my best guess.