My 2¢ .... I grown with CFL ( DIY hood ) ....
First increase airflow ( over plants )
Autos WILL sex out between 4-6 weeks of growth.
Pistils show plants are transitioning to flower.
SURROUND the plant in light ... Lower areas. ( look at the shadow areas. )
Plants WILL STRETCH up to week 3 of flower .
CFL grows require " lighter " feeds as plants do not transpire as with say HID lights.
Do not flip light schedule - stay on NO LESS than 18/6 or better.
( hopefully you are on an " auto " schedule. )
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