My plants do not seem to veg with nearly the same pace or vigor with veg+bloom as opposed to head 6/9 formula (4ml micro 6ml bloom). There is a drastic difference between plants fed the veg+bloom and 6/9. There's no question
If you want to improve your veg growth grab a bag of Maxigro, it will do better than 6/9 or veg+ Bloom. 1.0-1.2 EC in Coco with a little Silica for pH. Also, I go full strength 6/9 with rooted clones right away, under T8 high output lights for veg. good luck