attaroxanswered grow question 2 days ago They look fine to me. lighter green in the newer growth is also normal. Id suggest you keep a close look on how the tip burn develops further. Since you increased power by a good amount, a slight tip burn could mean that the plant is still adapting to the higher transpiration rates. You could increase the light distance an inch or two if you are in doubt. Autos often don't need as much light as a photoperiod does and they also often consume less nutrients.
Since they start flowering right now it could be a good idea to keep the increasing demand in mind.
I myself would lift the lights a little bit for now. When you feel your plants need nutrients, consider those soon, if the EC has dropped yet . Early flower stage greatly affects total yield!