Light Cycle Question. 18/6 to 12/12 and back to 18/6

Ok so this is my first grow, i am growing under a 400w mh and my question is this,

I already flipped my plants into 12/12 very early into veg to remove all of the males, Now that i have the plants sexed, Can i now Switch back to 18/6? or will this turn my plants into hermies.

thanks very much i didnt want to have to start a new thread but im starting to get frustrated searching for an answer.

Ive never done that so im not sure on the hermie thing. In the future a better way would be to take cuttings and flower those and know what cut came from where. Or just wait for pre sex flower which appears during veg stage at 8-12 weeks.

Going back to 18/6 didn't do it for me. I had to go to 24/0 to make my clone go back to veg. Depends on how long you were 12/12 I suppose.