First Grow / Grow #1

I Bought two more fertilizer but i am not queit sure if i use them right. Everytime i water the plants i do it with 12 Liters 2/Plant and that for i use like 48 ml of every fertilizer since BioBizz write in their table that u can use them togheter. But after the first time i did it i noticed nutrient burn so i stopped doing it and just put some Bio-Bloom into the water last time, and t think next time i will just try it with half of everything and see what happenes. And a even bigger accident accured, after a strom i noticed that the best plant snapped right at the top i made a splint with a training wire and some electrical tape. As now for me the plant looks like she's recovering but its my first time growing so lets see.