Plants recovered but... is it worth to continue?

I don't know why so many people with no plant experience start with hydro. It's like building and maintaining a space station. Everything has to work correctly or the astronauts quickly get sick or die. Mother Nature has been growing plants for a very long time with seeds in soil. It's simpler, more forgiving of errors and I think produces better tasting product. Auto's really need to be grown well from day 1 to get a good yield. They are on a fixed schedule ready or not so any problems directly hurt yield. If this is your first grow I would finish the grow as a learning experience and to get you some home grown product as soon as possible. Your light isn't very powerful so I don't think you will get great yields even when everything goes right so don't expect to break records but you hopefully will get a bud or two from each plant.

Sorry, but start again would be my suggestion, these will be a waste of electricity. If you are lucky you may harvest enough for 4 joints. You need to change nutrients too, 22% potassium is waaaaay to much for baby seedlings.

@Kannamar it is very likely your yield will be small but with 4 of them in there it may be still a nice treat for yourself .

Will probably stay small if autoflowers if you have the space, I always try to keep them

Yeah, auto flowers are a pain in the ass sometimes