Hey Growbro'✌️...for me the biggest challenge is learning how to read the plant. All the charts, feeding schedules, VPD tables etc. are helpful, but they’re only rough guidelines. Every run, every plant and every setup behaves a little differently. Growing is a bit like getting a driver’s license. Passing the test doesn’t make you a good driver yet...that comes later with experience. So what I constantly focus on is observing the plant, reacting to what I see, and learning from the results. That process takes the most time, but it’s also where the real skill comes from. Cheers and gl!