MangJsanswered grow question 4 years ago Hi Growmie,
assuming that you have a blurple light, I believe its not really ok to just switch the led to just the flower(bloom) mode as the photo needs a particular light in order for them to grow, might be ok but you'll notice a slow growth.
you can still use VEG while flowering no need to switch the LED to just flower i dont see any issue with them having VEG&Flower on at the same time it wont trigger you photo to flower as you are on 18//6 light schedule if you change it to 12/12 then it'll start to flower regardless.
hope this helps 😀