thanks mr gg, you've solved my problem for me / confirmed my suspicions. I've had no in or outtake, and the tent is in a cupboard. The issues I have been having look the same as yours, could be mistaken for light burn.
I was thinking the same as you, bah it doesn't get that hot here / we'd be so lucky, it'll be fine. Yeah its been hot enough recently, with the added effect of an insulating tent with CFL's warming it up. Best be ordering an exhaust fan soon then
I guess its probably something to do with the high heat and fairly arid air, means it has difficulty sucking water to the tips of leaves and top of the plant quickly enough, which explains why it effects the higher up leaves / tips first. Out of curiosity was she drinking a lot of water at the time?
Yeah she was drinking a fair bit, but TD is from all accounts quite a hungry girl so I just thought it normal.
I was gonna post some recent pics but she's not looking her best and doesn't want to be seen in public til she's had her hair cut, women what are they like huh