i think he was referring to the strains like the iranian auto or guerrilla gold that veg on 24/0 then flower when a dark period is introduced or flower anytime of the year outsideSometimes an auto is not a full auto. It is determined by what generation of breeding that seed is in. If ts first generation then good luck they are gonna be half auto half photo. You need to find a reputable seed company with guaranteed autos. I have personally witnessed this problem with my buddies plant who thought he had autos and kept them under 18/6 the whole time and realized that only half were autos and the rest were regular. If you would like me to elaborate I can but he had to switch them all to 12/12 to get them to flower cause he only had one tent thinking autos he didn't need more than one tent.
I thought of another possibility, do you think the seed company could have messed up a simple order of 2x the same seed?
I know that seems stupid as the seeds must come out the same jar but they are so different..
Guess I'll never truly know untill i smoke some