My 1st indoor grow, I made some mistakes. Mostly I topped and defoilated the day before flipping 12/12 which stunted her in the beginning. Didn't know better at the time.
Was late on a couple feedings, she got dry.
Got too cold in my bsmt, which also caused uptake issues. I moved her into an upstairs room and then had heat and air circulation issues... took a couple days to get that sorted and dialed. In the process I had to work late one night and I left a window open, forgot... overnight, outside temp was -8C that night, this caused some issues as well, leaves turned purple, but she's ok.
Yea, it wasn't a perfect grow, but the issues are not from using Miracle-Gro soil or nutes. I'm just growing for hobby, don't really care how perfect it is, it will finish and be enjoyed.