@Herbalist
Yes, I am in a tent, but there is no light leak, thank you :)
@2-Scoops
I currently have a Sanlight dimmed to 104W with a distance of at least 60cm. This must be enough distance, but I can try it. :) I also got oscillating fans, like you said, but the Sanlight doesn't produce this high heat, either. Yes, it's really just the tips. But all, including from the side shoots.
I will try your tips and check all conditions again,thank you :)
@DIY.Rik
Maybe, but I don't think so. At least I can try it.
My Sanlight is currently dimmed to 104W with a distance of at least 60cm to the tops.
If it's light stress then this one is truly a diva haha.
Thank you :)