I have read many of the harvesting yeast threads. I havent found an answer related to my question. I normally leave my beer in primary for about 4-5 weeks. It comes out nicely. Is yeast that has been in primary for that long still good for harvesting? Am I going to get too much dead yeast to use in another batch? Is there an ideal time frame for harvesting yeast? What do you guys do time frame wise?