So, 2 days ago i replaced my mh with my hps and flipped 12/12. They were 3 weeks (21 days old) now 23. today i was reading a lot and i think i should veg another week or two. do i just flip it back to 18/6 or should i put mh back in aswell.
Depends on how long they were in flower.. loosing 1 week of veg wont make much of a difference IMO.. Especially if you've got 3 under your belt...
You should be fine if you change now....I would just let them flower. Your not going to gain much and could cause stress leading to plants being hermies...
haha well i didnt get any answer till today so i put them back into veg on oct 7th there stoll vegging was gonna flower this subday but i might sooner because there getting pretty crowded.