liberty haze

We need more informations please. Watering and feeding schedule and how close is your light from the plant. You got yellowing leaves in the bottom (N deficiency) and purple stems (Mg deficiency) . Mg deficiency is due to too much light (light too close or too powerful) or it could be due to too much water (overwatered roots can't intake nutrients). N deficiency could be due to a lack of Nitrogen in the media or it could be due to overwatering (as I said, overwatered roots can't intake nutrients). There could be many factors, this is why you must put as much information that you can if you wanna find your problem.

my growing space is 2m X 1m / 180cm hight . for the past 6 weeks of veg i have used my 400w mh 60 cm from the tops , temp during veg grow was between 29-31 Celsius . the ladies are in 12 liter pots coco as for watering and feeding during WEEKS 1 2 3 4 - i water them when the coco has dried enough (i just lift the pot for reference ) usually it took between 3-4 days after i gave 750ml each plant ( im trying to spread the watering into a few sessions during the day ) it just seems they like it that way better then watering them with the whole 750ml at once... every watering included nutrients : - atami A+B for coco ( 0.3ml/l ) - House&Garden roots excelurator ( 0.2ml/l) WEEK 5 - i have experienced some slow growth and yellowing leaves at the bottom of the plant so i assumed it was N def so i gave it some nitrogen during the feed they didnt seem to respond to it and the leaves looked worse every day so i did as someone suggested in one of the forums and i flushed the girls in the 5th day of week 5 with plain RO water . now we're here in week 6 and they dont look very well ...