First picture shows signs of nutrient burn, pic 2 is nothing.
From the very dark green colour of the leaves, it seems you may be feeding too much or too often.
Also, do your plant a favour and go to 18/6, cannabis NEEDS sleep to have a completed photosynthetic cycle and a correctly functioning metabolism.
Yields will be identical, if not more with a proper active/sleep schedule and sticking to a very un-natural life of continuous light WILL lead to all sorts of problems.
24/0 could only be recommended by someone who does not understand photosynthesis or how plants function.
Hope this helps, Organoman.