I checked your diary the video moves around too much to actually focus and see what’s the problem. They looked pretty good from the video
Under hps lighting it’s hard to get a good pic but doing a close up pic with the flash on helps to give more of a clear picture.
Leaf tips curling down tend to be watered too regularly but it’s really difficult to give advice without clear pics pal.
Get some clear photos in your diary or a video of the problem and I will take a look