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I appreciate that. RO without buffering? Is that the cal mag? I do have cal mag. Premix in gallon then drip feed into rockwool with syringe? Should I add real low nutrients as well? Thought from what I understood ro water was fine in seedling. To start nutrients at roughly week 2 (autoflower).

Hey guys new here. This is my first grow ever. Going to be growing in RDWC. Started germinating these autoflowers in 4" rockwool. Think that may be my first problem. Had light on them 24/7 since they sprouted. I had about 300 umols on them at first. Trimmed that down to 150 thinking they may...