Originally Posted by MattGuk
A question I do have about skimming yeast is, even if im not plannimg to harvest should I skim it off anyway or just wait for it to fall out?
You don't skim, BUT...
If you are doing an open fermentation, either rack from under the krausen to another closed and sanitized container or skim and close the container. I usually use buckets, so I get rid of the last skim and close the lid if I'm doing an open fermentation. I don't let it fall into the beer because there is all kind of assorted crap in it, mostly dust particles. There's a BrewingTV episode where they show someone using a fish gutter as an oipen fermntation vessel and he, imho, racks way too late from it since he waits until the krausen has fallen.
You don't need skim/transfer if you use the standard airlock + carboy/bucket method since there's no way for dust to get on the krausen. You might want to rack from underneath the krausen anyway if you want to package since I've had ferments with 1318 which still had a cheesy, hard cap on them after three weeks.