I grow hydro and a few soil plants in my setup, I bought the technaflora start up kit and I was using it also with my soil plants. I have three plants that im harvesting tomorrow and the almost died and did the same things yours did but got much worse, all the large fan leaves started to get brittle and started to burn and then fell off. I didnt flush it in time so the nuggs look pretty bad bc of the stress, but i figured out that when you add bc nutes to water that around 7.0 ph that it takes it down to 5.6-5.8, which i believe it caused a lockout bc of the ph being way to low for a soil grow, also i was mixing it at the levels they recommend. If you have a liquid ph tester test the nute mixture b4 you water should be around 7.0 for soil and if flushing it out help the just give it regular water for a while then slowly bring the nute back up.