Week 5: We're flowering and the stretch is on! She continues to grow upwards, although I have been doing some light LST. I have another 10cm of vertical space to let her stretch a bit more. The 2 tallest plants are 40cm tall and I have tied them down a bunch. The smaller ones I haven't tied down and they are still not quite as tall. Space is getting tight, but it's manageable.
The short plants have very thin branches and I don't expect their flowers to get huge either. The taller ones are looking more promising. The flowers are dark on all of the plants.
I started adding in flowering nutrients now: Algamic, Bio Bloom, and Top Max. I added a tiny bit of calmag 1 time. She is drinking a lot of water. It seems like I am giving her 2L every other day at the moment.
I sprayed her with potassium soap and need oil again. This will be the last week of this spray.
I switched the lights. I turned the bloom lights on and the veg lights only a little. It's at about 60% power now. I'll start slowly increasing it now.
Update: She keeps shooting up, and I keep tying her down. Some of the stems feel a bit stiffer, so hopefully she's almost done stretching.
Looking good, I need to get to the point where i can say "2 more weeks" confidently. Its more of a guessing game with the plants I've grown so far as there has never been enough really clear trichome changes, even harder to see on these purple varieties.
@eurorack, Thanks a lot! Just because I can say it confidently doesn't mean I'm right ;) There are other factors that also let me know that the plants are almost ready. They start to drink less water than before. Some of the fan leaves fade yellow/purple and some fall off. The pistils curl and darken. And the trichomes change as you mentioned.