Well, here we are. 12 weeks of training, topping and pruning, she is filling the net and and in good shape for flowering. I will be making the switch to 12/12 today, so this was the last week of veg for this girl.
Since going into the larger tent, she has had much better light, and she has responded with lots of new growth. She has been screaming for more nutes. Currently feeding Megacrop at 6g a gallon. I use R.O. water, and total EC of the Megacrop along with Cal Mag is 2.0, which is quite high (I think it is anyway, I've only grown autos before), but the solution in the Autopot trays is still reading 0.3 EC lower than the res, and there is not a trace of burn on her.
I really have no idea how far I can push a plant of this size, so I'll let someone else tell me if this is too high. I estimate that by the time I've added Bud Explosion into the mix, the max EC at peak is going to be somewhere around 2.2-2.3, at which point I will be starting to lower N levels and will be dropping from there on. I'd love to hear input from anyone who has some experience with plants that have had longer veg times as to whether these levels are considered 'OK'. She certainly seems happy enough and is thriving for now, and I've been letting her guide the nute levels from the color of the leaves rather than sticking to a feeding calculator.
I'm estimating a flowering period of 10-12 weeks, which goes well into UK summertime, which means it going to be super hot in the daytime, so I'll be doing the lights off period during the day, and lights on overnight when it's cooler and I can max out the Kingbrite without overheating the tent.
Also, having only grown autos before, I've never had to worry about light intrusion as I just keep them 24/0. I never appreciated how much of the shit in the tent has little bloody lights on it. Had to go round taping up LED's on a few things to make it completely dark. I've also put the monitoring cam on the same timer as the lights, as it has an infrared sensor, so the power to the cam is cut at lights out.
I've kept a fairly detailed feeding summary on a spreadsheet. As this grow seems to be going fairly well (so far) I may go back and update previous weeks with a bit more detail in case anyone is interested.
tl;dr Flipping to 12/12 this week, growth good, girl hungry, Bud Explosion gonna be added to the mix this week, starting around 0.5g a gallon.
Happy days :)