Hook Effect

Did any of you ladies hear about this? I’m 8w1d today. I read about that when I was 6w, and had some spotting at 5w4d. I tried to test at 6w, and the hook effect worked. Today I just thought, I should try it again, and here the results:

Bottom was not concentrate urine but I didn’t mix with any water.

Top was diluted urine mixed with half water. And the line is darker.