IMHO Had to have auto traits. What seed company? Some seed co. Get sloppy and you could have recieved a mixed up seed. You also mentioned one did, out of many? And how did the phenos look. It could have even got down to the breeders. They could have had a males pollen stack make its way to the female and it have one grain of pollen from an auto. Some how.
As SG said above, i also mothered dozens and dozens of plants. All 18/6 all never flipped ever without 12/12. Pre flowers are pre flowers they come with age. Some strain/phenos show sex a bit more proudly then others.
Ever recieve clones with preflowers? I know I have. What im saying is that something was up with genetics if you were going full bloom in anything over 13 on some satis will go 14 but, but full bloom without a reduce idk man.
So now im curious if this plant was going into bloom with "no matter what light cycle". Did you ever finish a plant at 18/6 just letting it chill in veg room?
Any way nice lookin grow HMomma, cant wait to see the frost levels on thise ladies. Ill have to go a few pages back to see what ladies you indeed are growin.
Personally I dont grow led . If you decide to pick some more up I say to go GROW BLU led have heard and seen good work with these lamps. I mean just checkum out see if its in the budget or what your lookin for.
Happy farmin�;)