Size

Yes they will double or even triple in size when they start flowering. Happy growing 🌱

Some people should take things more lightheartedly, I spoke to them earlier today. It's how you read stuff 😅

Ppl here are not nice. "You again" he only asking Q. Yup my friend. I'm old school so idk about autos, nor do I want 2. But I from what I've read in pre flower they are similar to Fems in the way they pre flower. For it not to stretch try keep your temp steady when lights on and off within a 4c window if you can. And after you leave pre flower. 15-25 days you can drop the temperature a lot to bring out terp profile. You'll know when it stops it won't grow anymore in height, well, it might add a few CM but very little, you'll know the change wen leaves PF, it'll go from say 10cm in a week to 1-3.

You'll see quite a bit of growth in the flowering stage... until they reach their max height. I was happy to read you're starting bloom nutes as the last picture in your diary shows they are definitely in pre-flower and so will NEED those bloom nutes. You don't have any information as to what nutes you're using or in what amounts... that's always a good thing to add to your diary since it's an important piece of information for anyone trying to help with any problem/concern you might have in the future. I'd also start to lower your PH just a bit - down to 6.2 or 6.3 ... helps the plants absorb the whole range of micronutrients they're going to need. Good luck! And don't hesitate to come back with other questions you might have!! We're here to help in any way we can...

You again! Yes in the first 3 weeks after switching to flower it has a grow spurt when flowering 🙂 So yes it's true, but an odd question!