Hey DB, can't believe i haven't stopped by for a month! Sorry. i'm crap 
Those girls are W A Y hungry for N !!
You've made the mistake of going up and down with your nute levels, you should be consistent. Day 28 you were giving them 2ml/L, shoulda been 3ml/L.
Always best to push the nutes as hard as you can since it's a lot easier for plants to recover from slight overnuting than it is for them to recover from slight undernuting, in my experience.
This is my first ABB grow and i am finding them to be medium-feeders, not light.
Get some N in there !
Next grow try the dolomite lime, too, but use more than i did since i now realise i didn't put enough.
I used one slightly heaped desert spoon of dolomite lime powder per 3L, i think next time i'll use twice that, and also prepare the soil a month before planting, as i've read on gardening websites that it takes a while to combine with the soil and spread it's helpful stuff.
Don't forget, in terms of nutes, too much is better than too little
All the best,
steely

Those girls are W A Y hungry for N !!
You've made the mistake of going up and down with your nute levels, you should be consistent. Day 28 you were giving them 2ml/L, shoulda been 3ml/L.
Always best to push the nutes as hard as you can since it's a lot easier for plants to recover from slight overnuting than it is for them to recover from slight undernuting, in my experience.
This is my first ABB grow and i am finding them to be medium-feeders, not light.
Get some N in there !
Next grow try the dolomite lime, too, but use more than i did since i now realise i didn't put enough.
I used one slightly heaped desert spoon of dolomite lime powder per 3L, i think next time i'll use twice that, and also prepare the soil a month before planting, as i've read on gardening websites that it takes a while to combine with the soil and spread it's helpful stuff.
Don't forget, in terms of nutes, too much is better than too little
All the best,
steely