First Grow

They are healthy but it may be a little bit cold for them. The temperature shouldn't come down below 18°c

No, you have to hope the person who sent the answer to your question checks back if you add a comment after they answer haha. Or you can send them a chat message

I, too, grow autos under 24/7 and mine never droop unless they're either thirsty or have been overwatered... since they're drooping on you right after you water them, I'd say you're not letting them dry out enough between waterings. Make sure the pot is super light before giving them another drink! You don't have to abide by a strict schedule.. i.e., every two days or whatever... let the plants tell you when they need something. Autos can withstand drought better than they can withstand overwatering so if I'm ever in doubt, I will wait until they start drooping on me and then give them water or feed (whatever is up next for them) and they respond happily after about an hour or two. And btw, do check out FreeCain's diaries (there aren't any) before you take advice! Good luck with your grow... it looks fabulous!

LST can really be done any time it's needed - the exception being if they're too young (i.e., before they have 3-4 nodes). I've had to do LST on my Tangerine Dream as late as 3 weeks before harvest! She was going to tear therough the top of my tent if I hadn't! When the LST has been in place for a while (couple of weeks?), it will become permanent and you can release it and use the material (whatever you've used) to use it elsewhere... Nice job, btw... the grow looks fab!

Is the one your having issues with the Auto or the Photoperiod? I would monitor the EC and PH of the runoff for some indicator on whats up. If you not watering till runoff then make a note of how strong the feeds are. Autos do not like feed as strong as photoperiods. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ I like to use this as a reference point for most autos but still need to look at your plant and see if its saying more or less. FYI, biobizz is best if left to stand out overnight then ph adjusted if needed, it tends to drift down over some time. Good Luck!

i wait til 20% of trics turn amber/orange to harvest

You should look for trichome on FLOWER not on leaves. Leaves mature earlier. take care with that not to harvest too soon.

Many things going on here. Well yes you could have been overfeeding, your other plants are already showing brown tips indicating that. Your EC(PPM) is like 0.8-1.3 thats not that high for flowering, even for autos( i did even 2.3 lol with lots of only watering) but still you should check up on your soil, Try to flush and see what is happening in your medium(soil) but that is not the only issue here in my opinion. You had most definitely a heat and light problem as well, look at the leafs. and when you found out, i can only gues you lifted your lights? What will happen? the buds will stretch, you get thoose fox tail looking buds from both things ;) Look at week 10, picture 4, plant behind this one, that plant is already foxtailing because of that decision. Sure foxtailing can be genetics but i don't think so with your plants. What happend with this plant cannot be undone but you still can harvest her when she is ready, but just don't make decisions for this plant that can screw up others. You also should give your plants a time to rest. Sure 24hours a day can be done but you should do like 18-20 hours a day, your plant will love it more. As for your lights, there is not a perfect height from lamps to plants with leds but since you use like 150watts, 60-70cm might be to high. Just make sure you don't run 24hours a day, have 27degrees temperature, then you can lower your lamps for better compact buds. You can try to make your filter run faster, inflate fresh colder air, make your fans blow better on your cantopy. Goodluck growing :) Goodluck growing.