Charles, bread flour will be fine; you just need to increase the amount of water a bit, due to bread flour's higher protein (and higher absorption). The reason you didn't see as many bubbles is that your starter was thicker, making it more difficult for bubbles to form. Hope this helps - PJH
September 26, 2016 at 8:31pm
In reply to I have made sourdough starter beginning with King Arthur white … by Charles Sorrentino (not verified)