Back to photos - blue ox

Getting both trellis nets up. My first will be for training the canopy my second will be for support. Plants are doing well except for the hard plastic autopots. They are getting brown spots and turning light green. Same nutes as the rest who are healthy. I checked PH at the pot. It is in acceptable levels. Maybe its a coco buffering issue and watering style? Edit: got my new light in finally. Exicited to see how the Plants like it.