Dude these plants are in rough shape. At a minimum I would transplant into fresh clean quality soil, get some quality nutes and start reading.
If you want to try and save these as they are I would flush with with a few liters of tap water each, add a reduced feeding at the end of flushing...
Its easier to buy bottles than it is to learn plant nutrition, thats all thats happening here.
First mistake is believing the hype, second mistake is following the directions on these bottles. I guarantee by week 3 or 4 your plants will start to yellow and have various deficiencies. It just...
You are correct in your diagram. Each of the 4 new tops below the cut will produce a big cola. You can always keep the top you cut as a clone. Some strains respond well to this and grow 4 main thick colas, while others strains wont. If you top at a higher node like 3,4 or even 5 as was suggested...
I was disappointed when I discovered all of my td's were sativa too, but now that they are filling out I'm pretty excited. Give it time bro and I think you'll be impressed.
Peace,
Medi
Cant help you there. I use a 30x to check, waaaay too much variation in most seed packs to harvest all at the same time IMHO. Unless harvesting all at once is part of your plan.
Plus I find breeders flower time estimates kinda like car manufactures gas milage estimates....
I'm sure...
I bet if you test the run off the ppm will be high. The quantity of salt based nutes could be adding up below the soil locking out proper uptake.
I'm assuming everything else is dialed in...
I would flush, then a reduced feeding.