Beginning of week 3:
Bumped up nutrient solution to 50% strength (500ppm) and around 5.9-6.0 pH.
Transferred two of the girls into bigger pots as the roots were poking out all the holes on the bottoms of the solo cups.
Bit concerned about very minor yellowing in newer leaves, but hopefully the slightly stronger nutes help. I also buffered the coco with calmag prior and then dried it out a bit with a fan prior to transferring them over. Hoping this helps with some of the issues I had in the first two weeks. Didn't water the night I transferred, but gave 50mL of stronger nutes in the morning, as well as a calmag foliar.
End of week 3:
Really dialing in the process and what I'm working with. Plants are growing quickly and looking very healthy. Still haven't quite settled on what's best in terms of LED strength and distance. Plants are staying pretty squat at only about 4 inches. Have been giving them 100mL a day and weighing the containers to see whether they are using it. Consumption is finally starting to reach that point. Haven't been brave enough to do runoff. They seem to be pretty close though as the bottoms are always very wet.