Dont add nutes to the transplant, i was talking about the last watering you did when the plants were looking good then you watered and they drooped, i do reckon that some nutes would have prevented this, plants cannot live on water and you added barely any nutes and lots of water for most of the grow, this makes sense dude, had this been a healthy plant i would be at between 600 and 800 ppm ferts doing like a fert, fert water or similar, mine seem to like fert, fert, fert water.
Now you are in the new soil as soon as the roots spread they will feed and then you should see the plant pick up, i wouldnt feed the new soil, it probably has enough, expect it to take a week or so to show improvement.
You see why i wanted to sort the problem before transplant, now in the new soil most of the roots are still in nute deficient soil until they spread, feed now and you might burn the plants.
Just to say that there must be loads of different types of burns a plant shows, plants can burn from too much or too little nutes, overwatering and pH, in fact can some one please point out somthing that dosent make a plant burn or go crispy over time?
Like i said sulphut will not work in soils with lime, it is for unlimed soils and soils that dont sit on limestone beds outdoors. I grow outdoors, sulphur is more for out doors and not recomended for indoors.