Hi mr sp0ck!
Thanks for your visit and question.
Our F1 Fast Version® strains are 100% photoperiod-dependent.
This is a product in which we are pioneers, we "invented" and were the first to have this product in the market in 2013. Now a few other seedbanks also have it, but they are also photoperiod-dependent strains.
The autoflowering parental used in the development of these strains only contributes with the gene of a fast flowering stage and does not change the original photoperiod-dependent parental into an autoflowering strain.
For all the important information on the F1 Fast Version® concept by Sweet Seeds®, please read this article published in 2014 in WeedWorld Magazine:
Of course now we have many more F1 Fast Version® strains in our catalog.
Check it out:
I hope this helps to clarify all your doubts. Any other question or comment, please post it here.
Sweet smokes!
tommy