I had to remove some yellowing leaves... I am not sure if the plant is just too tightly packed around the edges or if I am not feeding her enough nutrients. I have started giving her BioBizz Grow (1st last night) since I've read it is mostly just molasses and should be supplied not only during "growth" - e.g. the vegetative phase. On the buds - the leave edges have started to turn a nice shade of purple. I usually only water exactly the required amount - so 1l for my 15l pot. At the beginning of this week I decided to do a small flush - as per grow question recommendation. I only used 25l to my not completely full 15l pot (I am guessing 10-12l earth) with rain-water and checked the runoff: PH=6. PPM dropped from 1800 to <400ppm at the end. She has started to smell very tropical the last few days... With humidity levels hitting 80% outside - my little 25W dehumidifier can't keep up... I keep my fans on and hope for the best. Soil is still wet from the flush - might try the Seedhunter's recommendation and not water for 5 days. Looking back - I really should have noticed the whitening tips 2 weeks ago... last week I should have made the connection of "burnt leaf tips = overfeeding" - but nooo. =) I have been making the same mistake as with my last grow - I watered exactly what she was drinking... 1l/24h. So salt could build up and the magic marker is 10 weeks. This is when "watering wrong" shows... Day 87 (Friday): still no signs of drought stress so I will water with low nutrients maybe tomorrow... I got this tipp from Greenhouse Seed Co. / Seedhunters plus check this out if you are coming from academia: https://www.cannabisbusinesstimes.com/article/3-tips-for-controlled-drought-stress-cannabis/ The tropical smell is noticeably less now... Day 88: watered for the first time after 5 days with ~3l of rain water - and some nutrients. There is a lot more purple on the upper leaves now.