Thanks for clicking on my thread, I am growing for the first time and I'm running a seedsmen green crack auto in a DWC using GH and Cal/Mag for nutes. I've been giving it half doses on the nutes. I'm also using the Spider Farmer SF-2000 on 50% power (sometimes I'll up it to 80% for a few hours) at about 26 inches from the top of my girl. I've been dealing with this strange brown spotting on the original set of fan leaves as well as some yellowing. The brown spots don't seem to be appearing anywhere on the new leaves but there is a bit of yellowing. Aside from that it seems like the plant is a little behind in growth for where she is at in her life (28 days). If you guys can spot anything or give me some tips that would be awesome. Thanks for reading and have a great day.