Its been a long time since i have grown in soil so i wouldnt know if bulk performs worse in soil. But my question is why grow in soil at aĺl if growing hydro. Hydro is superior in every way so i would ditch soil. The only way its worth growing in soil is when its a fully organic super soil and you dont want to buy nutrients. Other wise just ditch soil for coco or other hydro, you will vet bigger stronger plants grow faster and better quality. I dont buy into the whole soil gives best weeds, ive never seen soil produce what hydro can ever. Just food for thought.