Both of these seeds were Big Bud Autos from MSNL. ...

Don’t worry You stunn them for a week or less If you want big main bud this is something bad if you like medium size buds this is ok But still you lose 5to 8 days I will highly recommend you to do just lst Almost same effect and less stunning

When topping or fimming a plant its crucial to tie down or controll the the tops once recovered or they will shoot up like yours have it's all a learning process next time I would advise topping then tieing the topped tops down once recovered, this will make most other branches fight to be tops then its just maintaining the canopy as it grows have a look through my diaries at weeks one to 6 to see what I do if u need any help on your next grow give me a message better luck next time at least your still gonna harvest better than nothing dude

IMO you haven’t won, but you are learning. My solution to this issue in future would be early LST and defoliation to control the heigh and shape of the plant. It also means you don’t have to keep moving the light up as they grow. Perfect for multiple strain grows... I can give you some advice on how to LST, if you look st my diaries you will see I use the same method every time. Every grow builds knowledge and experience no 2 grows are the same. My closing but of advice is concerning your nutrient regime “less is always more” think of it like a chef in a kitchen, if you add 1 pinch of salt to your soup and it’s not salty enough you can always add more, if you add too much however you can’t take it out😜 good luck✌️🏻

It doesn’t look to be anything you did they look like they went through a heavy stretch during flower which is somewhat common in some strains

The type of light you use also plays a role in how tall your stems will grow. Orange and red lights provoke taller, thin stems, but thick, short stems blue light is best. Using metal halide lamps while the plant is in the vegetative stage will produce short stems. The temperature influences how your stems grow. The higher the temperature, the longer the stems will grow. Your plant’s stems will widen and the growth will lessen at about 60*F. When you have it around 80*F, the stems and buds will begin stretching. If your buds get too close to the light, this causes it to become tall and thin. Don’t make the mistake of thinking this is light burn because this is not the case. In fact, the heat from the lamps can make it unbearable for buds. Air-cooled lamps are great for keeping much of the heat from coming into the room. Hope this helps.

If you're having significant spacing between nodes and stretching, is recommend 1st checking the light manufacturers recommended distance from plant. Also as the guys said maintaining a low and even canopy is essential, whether through tying down, topping etc. I am also slightly confused, the diary says 400 HID but the pics coloring looks LED? When the plant doesn't get topped it maintains its apical dominance(the Xmas tree shape) which is great for sunshine, when we top or fim were breaking that singular cola into 2 or many. Perhaps you could move your light slightly away from above the untopped plant and maybe that'll be enough to not burn the bud completely? Best of luck to you, indoor growing is so intimidating with all the many ways and means of controlling your plants. I hope the harvest will pay off, even just with knowledge and experience.

For us (indoors growers) the main goal its to keep an even canopy (top of the plant) in order to maximize yields. The reason why is because grow lights like yours ( Led) are very powerful and can burn what get really close to it. But they don't have of course the power of penetration of the sun. So if your top cola is to close to the light will get burn at the same time the bottom nug won't get the necessary light to become a real bud instead you will end with a "popcorn" bud with little weight. Now Don't worry this is your first grow so a learning curve needs to happen in order for you to become a very good grower. For now i will try to bend your top cola because is very close to your light and trade to get it as horizontal as you can. This will help you get it farther from the light and bring the light down so your other buds can get more light.. hope this is helpful to you brother!

On their natural state (when they are not topped), the plants naturally develop a main large top and get tall. This is why we train the plants so they grow small, bushy with lots of tops, not just one. You did not do anything wrong, learning how to train is a process we all learn to do.