@St. Tom
@Proph
Just a quick update to keep you in the loop!
I found out the problem when transplanting... shite coco!!
I normally use bio nova coco bricks but the shop never had any so got U-Grow block instead! I potted up some photo plants I had in solo cups and they look awful so I put some of the coco in a cup and poured 0 e.c water through it and the runoff was 0.9 e.c!! Add that to the 0.8 e.c of the first feed and we have plant poison!! I have no idea what the 0.9 e.c in the block is either, all I know is all my plants nearly died because of it! I have called the shop and told them and also sent an email to U-Grow!
I have removed the seedlings best I could, flushed the coco and repotted! A few look like they wont make it but fingers crossed I got the rest sorted in time!
Will keep you guys updated ✌✌