Our general plan is to dump trub after the initial ferment has started to slow down. This removes a majority of the trub, the main item we are trying to eliminate. After a few days we sometimes harvest yeast after dumping the initial trub. Sometimes there is only one dump, sometimes a few.
When Should I dump my trub?
I'd say do not dump until at least 10-14 days post pitching, assuming an appropriately sized pitch of healthy yeast was used. typically i dump the trub just as the fermentation is winding down...about 4 days in. This cleans out all of the garbage.
Should I dump trub?
Since you have the ability to dump the Trub, it is always best to dump it early in the process. ... A commercial brewery will dump trub on a day two of the fermentation generally. When you get ready to transfer to a keg, the answer is "it depends" on how high the pile of yeast and hops are with regard to your racking arm.