Autos and photos in same tent good idea or bad idea

Hey man. Anarch got it right. I'm doing something like this as we speak. I have my light cycle set to 18/6. My recommendation is to keep it set to 18/6 as long as you can to allow your autos to develop into a yield that's worth while. If the majority of the lifecycle of the auto is 12/12 you're going to definitely reduce how much they produce.. Although if you're okay with that..then its just fine. If you have the meant to do so keep light cycle 18/6 veg those photos out let the autos finish up and flip to 12/12 when the autos are later in their flower cycle. Depending on space you can use topping/super cropping to keep the photos under control.. The up side to this is you'll have big photos that will yield a lot. In situations like this I treat autos as "Filler" plants where I can get some extra bud throughout the years harvests. I hope this helped. Good luck with your grows :)

@Phillycash, yeah you can keep the autos with your photos on 18/6 veg, and when you flip to 12-12 for your photoperiods they can stay in too, but just make sure to keep the lights on the right light deprivation cycle for your photoperiods. The downside to keeping your autos in the same tent is they will get less light then they are capable of receiving during flower so it might affect your auto harvest size if you keep them on 12-12. Hope this helps!