Its been over 2 weeks now and I have gone through 5 starters in an attempt to make a sourdough with no luck. I only have access to white lily bread flour which is what I have been using. I have been mixing 70g flour with 70mL water, and feeding once every 24hrs. I have been keeping the temp around 72F. I have been discarding half the total weight before each feeding. I have looked and read and researched to no avail to find a solution to my problem, as it seems that my problem is uniquely different. No matter what I do, I don't see bubbles, I don't see any rise, and I don't see any activity whatsoever. It only continues to remain thin and soupy, and smells quite tangy and slightly chalky. At this point I have no clue what is going on, or what I should or shouldn't do.