males show signs first and very fast. when you flip your light cycle you trigger flowering at the new 12 12 cycle, during this time during the first few weeks nothing happens except the is getting ready for flower, these hours the plant spend its time on stretching so she can grow some big flowers for you, the females show closer to 2 weeks, when they come you will know, i have a diary of the g13 hash plant in wee k 4 is a male, there a pictures in it. check it out. your plants look good from what i can tell with the pictures