Thanks guys, they are going to be 6 weeks on Friday if my reckoning is correct, so about 3 weeks left, when I did this strain last time it really filled out in the last few weeks so I am happy for now, I just hope they fill out as well as it did last time round. I'm hand feeding with dyna gro bloom at 1.0EC and PH 5.8 currently in the hugos. I think the rockwool really does not have a great air exchange and retains moisture far to well, I will not be using it again for anything.
The second run has had zero feeding, I do not believe that these autos will require a feed until about week 5-6 in bloom. I have only watered them with PH 6.2 tap water. They are unbelievably going to be 3 weeks on Friday too. These air pots are 1ltr and I do not think I will need a bigger pot for them, last time the root ball was the size of a softball in a 7.5ltr pot with the same soil so my figuring was a 1ltr air pot may well be enough.