May 18th
Time for low-stress drastic measures. Her height has now reached the point where all google inquiries suggest she's sure to become badly light stressed if left to her own devices. We're flying too close to the sun, folks.
I'm not convinced heat is an issue, as there's great ventilation in the room and two fans blowing constantly, but something had to be done about the diminishing distance to the light. We're down to 20cm~ from the tip of the main cola, to 25cm~ after pulling her to the side a little with some trusty red string. Somehow there's no sign of stress on the leaves, but they say this usually shows up after the damage has been done, so we'll so how things pan out. I'll keep pulling her further away as needed. Hardly ideal, but not exactly unexpected.
I've also ripped out some mosquito netting that was blocking some of the airflow from the window the extractor fan vent tube leads to. It was all gummed up with dust and cobwebs. Since removing it the airflow from the room is venting outside much more smoothly, lowering the humidity of the room by a few points. I've even seen it reach as low as 55%, which is a new low. Previously the humidity wouldn't go lower than 69%, which is a funny number I admit but I'll take a number without meme-connotations in favor of a lessened likelihood of bud rot any day.
I've doubled the dose of top-max from 1lm/l to 2ml/l. Bio-biz suggest 4ml/l at this point, so we're playing it safe.
Fingers crossed as always.