Chem Sister X White Widow Auto x Blue Am

Hi, This week did not go well. I fed Seasol Purple last week and it caused bad nute burn. I flushed the soil with fresh water once I noticed the browning tips. This one handled it a lot better than my other plant "Blue Monkey Shit" I didn't expect this and I am now doubting myself as to whether I did the dilution correctly. She definitely has slowed down because of this. Anyway, it is what it is. I think she will still finish off with a good yield, but won't reach full potential. Lesson learnt - don't need to feed plants when bagged soil already comes with fertilizer in it.