Here are a few pics the wife took for me yesterday under the LED.
I saw one yellow spot on one leaf. Any ideas? Will do a full update soon.
Often a yellow spot on the leaf is from some splashed nutrient water that has dried on the leaf. Or... it could be the start of PH issues. Anyway, good job on your grow. As far as PH issues, make sure you let about 20% of the nute water dribble out through the bottom of your containers each time you water. I've had no issues with PH since I started doing this. That and adding calmag, particularly with LED. Glad to see some Alaska growers here!