Indoor growing - need help identifying problem

Hi, I'm growing indoor for the first time (before I did only outdoor) and my babies are in serious problems. I think they are pretty much done, but I would like to understand what went wrong and correct on the next batch.

The upper leaves are all curled up (not dry though) and the stems are doing all sorts of weird things like branching almost perfectly perpendicular and swallowing

Any feedback will help and it'll be highly appreciated!

Cheers
MT
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It looks like a very serious overdose of nutrients. When they curl and dry up like that, it is usually from the fertilizer levels pulling water out of the plants, not vice versa. What have you been feeding them and what soil are you using?? It also looks like you might have had issues with Spider Mites, note the red dots on the leaves.
 

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