Lot's of problems here, to begin with you need more light, more pots, more soil, and some growing knowledge as there are very evident pH issues. At 5 - 6 weeks these ladies should be ready to flower but they are far from ready to flower.
regards,
Gonna have to agree with ru4r341.... definitely PH issues, as that is what I have had since 2 weeks after flipping to 12/12. Remember that the flowering cycle the girls will get very picky and not as tolerant as when in veg. Like any hobby, you need to invest 3 major things.
1. time
2. money
3. effort
time - to keep up with the plants and make sure your 'on time' so to speak.
money - I feel that the cost of getting good to great results has gone down in the past years from the research that I have done. I have spent approx. 900 dollars and that is getting a good ballast, HPS bulb, tent etc... But when spending this much in 3 months on 'corner stores' I am definitely going to see a great return on my investment.
effort - this is the biggest thing in my opinion, cause if you do not have the knowledge then you will surely not reach the potential. research, research, research..... They are weeds and do grow like weeds, but indoor growing has to mimic the outdoors and mother nature as much as possible. Some people are lucky and just have a green thumb... but most of us, myself included, will kill a plant 7 out of 10 times...
hope this helps, cause they are your babies and will treat you as you treat them