Right now my inline fan is set to my light which was 18/6 . flipping to flower today and it will be 12/12 . have a circulation fan on 24/7. How long do you run your inline fan? Do i leave it on 24/7 ? Or run it on the timer with the lights.?
I run mine 24/7 on a low setting. There isn't a need for me to change the speed during lights on or off. I like it running 24/7 because even with the lights off, you want to be exhausting stale, spent air. This should also bring in fresh air through any passive intake.