All is good.

I think it is at this point that the two oldest plants are starting to actually enter veg.

As far as my thinking there were bugs, I think peices of coco just get picked up and carried around onto the leaves or something. I have'nt seen anything like it since then.

Everything is looking really good. I can even see roots beginning to come through at the bottom of the pots, so I will buy some big pots tomorrow and re-pot them once and for all. I have been watering just enough to give them a decent feed without saturating the coco.

Peace.