RQS NL Auto run I soil

keeps growing steadily. moved the other smaller plants out of the big pot and lowered the lights again, but at a bit lighter intenstity (70%). Think I might have given too much nutes or more likely lightstress. I'm thinking the latter, since it's only on one plant and it's starting at the top. Considering defoliation, but need to look up a bit more about that. Starting to s how small white hairs, guessing that's preflowering stage.