Long story short, my girls were planted 6/5. They are all in flower and stacking bud. I never checked my timer . It’s been running 12/12 for light. Can I switch to 18/6 safely without harming them? Or should I just finish on the 12/12 cycle. They are autos
You can go for 18/6 if it is an auto. Probably best to run it at 18, as that improves your DLI.