I have stopped all feeding after they got a bit burned. I think nutrient lockout was another problem, the water I had was a bit hard and not pH buffered. Today I flushed with a lot of watered, adjusted the pH with citric acid to around 6.5. I didn't measure the TDS of the runoff, but it took a lot of water to get it clear. There were some leaves that turned yellow and some leaf burn on the ones closest to the light (alas there is no more room in the tent to raise the light much further). The glueberry is looking ready to harvest, I'll probably wait one more week just cause I flushed today. The two plants were definitely too cramped in the space, I will only put one next time. I believe some of the leaves turning yellow were also due to poor air circulation and being up against the wall. All in all, considering this was my first grow ever, I'm pretty happy this far, the yield doesn't look too bad. I'll post some more, better pics next week, and soon a dry weight.