Yup hops trub will settle. I usually start with a gallon growler, dump the yeast slurry (with trub), and sanitized water. Shake it abit, and set the timer for 15min, the trub will settle. Pour the good yeast (leaving the trub behind) into a 1/2 gallon growler, repeat the process. Then I fill up my mason jars with the now washed yeast, and cap. After acouple days the yeast will settle leaving a layer on the bottom, of the jar.