Ok here we go - It seems it was a PH issue - Below are a couple of pictures / updates.

So since the seeds germinated its now been around hmm 3 weeks.

The plants are around the 5/6" mark - I'm thinking of transplanting them very soon into much bigger pots (2-3 gallons?)

Does their appearance/height look/sound kinda right for the current time they've been in veg, or does it seem as if they look a little stunted?