Grow#2 RQS N. Light ; 420FB PurpLemonade

This was a big week! Purple Lemonade continued to stretch like crazy and started really developing a purple pheno (huzzah!). Leaves were still spotting with yellow, but overall growth seemed solid. Northern Light is just working away at being a vigorous and busty lady, and keeps filling out nicely, though seems mostly done with stretching (I feel ya girl... I'm bad about it too). I started to suspect cal-mag issues for Purple Lemonade at this point, though was worried about potential fungus gnat or rust issues. (Closer inspection more or less ruled rust out, and it wasn't spreading to Northern Light, so.... *shrug*) Gnats are an issue elsewhere in the house, but I don't see many in the grow tent, and again, why would it just be an issue on one plant. Still not sure what was/is going on with her. (Spoiler alert: Cal-Mag, once I obtained some, didn't fix anything). I thought maybe Purple Lemonade could be getting a little exhausted and stressed from a 20 hour schedule so cut light back to 18 and dropped intensity to 70% on my 200W SF2000