Looks like I have overwatered this one quite badly. I hope that's all it is. Few marks on some leaves as shown in the pics and video so I'll monitor to see if it gets any worse. Tested pH and it looks good at 6.9 so I'm gonna increase bloom nutes cos it could be phosphorus or magnesium.
@Valentino1sttime, I know what you mean! It's was a long one according to the breeder but it is taking a looong time anyway. Think it's pH related or a deficiency. Will find out what the pH is later today.
Happy new year my friend! Your grow is looking fantastic and healthy and I wish you best in this next year growing some amazing plants and yielding yourself large amounts of bud. Cheers!