I brewed three 1 gal IPA a week ago, each with a different hop. The first two, I used half a Whirfloc tablet (a lot, but was having a hard time breaking it into less), and no Whirfloc in the last. The pic below shows the the difference after the first hour. I don't have a current pic, but the third has clarified a little also, but still no where near the first two.