How often should I dump dead yeast and dry hops? We recommend dumping dead yeast and dry hops from the every 2-3 days during fermentation. This prevents the yeast and hops from clogging the valve. You can do this from the dump valve if you are using a fermenter that has one. Related articles How long can I leave my beer in the fermenter after the SG reading is stable? How do I dry hop in the GF30 Conical Fermenter? I am struggling to harvest the yeast from my GF30 because my yeast dump valve is blocked. What do I do? Can I use a bottling wand to bottle directly from my GF30 Conical Fermenter? What is the difference between OG, FG and SG?