Lowryder 2 bad batch?? week 8 and just showing sex

Hi all A friend is growing some lowryders and the have just started to show sex at around week 8 which is very late. They are like all (5) 20 - 24". I have grown lowryder 2 twice and its been fine.

Ive noticed on forums others have had similar problems. Has any one who got these slow autos to finish?? Some are saying leave them to grow (got em under 18/6 400 hps 10L pots in a grow tent, fans the works) or some are saying induce by switching to 12/12??

Anyone had the same experience and finished??

I'm having the same problem; except mine aren't showing sex at all...I have 4 20 watt cfl two 60 watt hps, 2 100 wat hps, four 120mm fans two in two out... It's been about seven weeks and I don't know what to do either...mine are much smaller though at about a foot...any tips?