When to turn to flowering?

I personally would not top again. Rather go into 12/12 flower. I prefer my plants on the greener side, but to each their own, and what works for you. Just remember, once you turn to the flower nutrient schedule it will be less N, the plant may turn yellow prematurely.

Actually, she,ll go very easy due to lack of N

Sie benötigt Nährstoffe, würde sie nicht in die Blüte schicken bevor du die Probleme nicht gelöst hast…

3 options -24h of darkness before flip then 12/12 (13-17 days) -24h then 6/18 with DLI 70 (8-10 days, no stretching) -just 12/12 (14-18) Don,t do 2nd option if u can,t measure and calculate DLI

Dipende, secondo me quando riesci a riempire in orizzontale tutta, o quasi, la superficie della growbox...almeno finchè l'altezza te lo consenta...ottimo lavoro comunque!

Looking great for ~5–6 weeks of veg 👍 Since Purple Haze is very sativa-dominant, you can expect around 80–100% stretch during the first weeks of flower. I wouldn’t top her again now to avoid unnecessary stress – she’s already nice and bushy. Since LST is off the table, the best move is to flip to 12/12 as soon as you’re comfortable with the height. Better to switch a bit earlier, the stretch will quickly fill the space. 🌱💜 Good grow!