Green Poison XL Auto

The first real week of flower. I forgot to save my day-by-day notes 😬 so I will summarize my thoughts for the week: Early on in the week I gave a heavier feeding as I was unexpectedly away for a few days and didn't keep to my feeding schedule. I gave about 3 ml per L of each base nutrient. I gave 2L and had almost no run-off. A couple days later I noticed the rust-color spotting on some leaves. I'm very confident these are just burn spots from water drops sitting on the leaves, but as I've stated in earlier weeks I am trusting to my hard tap water to provide my Cal-Mag. The thought of a deficiency made me want to ensure the plant got a solid uptake of magnesium. I went a little unorthodox-ed and against the advice on the internet. I researched the optimal PH for magnesium uptake in CoCo and came up with a PH of 5.2 (not even sure if this is accurate as there is so much conflicting information on CoCo). I gave 1 ml of each base nutrient at a PH of 5.2. All of the information on the web says to keep PH between 5.5 and 6.5 in CoCo. I weighed the risks and since I am using a PH perfect nutrient solution, decided to go ahead with it. To my surprise, she reacted very well! Her leaves perked up and she looked great after the feeding. Phew, no damage done. I'm having some problems with humidity - as in I'm having trouble keeping it as high as I want. It's been hovering in the 35-40 range far too much, which is way too low for early flower IMO. The only solution I have is to put my exhaust fan back on the timer, but then I am giving up good airflow which is also important in flower. At this point I'm not sure which sacrifice to make, but I've been keeping the exhaust fan on all the time. Finally, about mid-way through the week I had mostly stopped LST with the intention of budsite production and now am just aiming to keep the canopy as even as possible and improving penetration to lower budsites. My training hasn't been perfect, but I am quite happy with the shape of the plant. There was a point in time I wasn't going to do any training at all and go with the old adage of letting autoflowers do their thing. I am now happy I did more research and went ahead with LST.