I am a new brewer and still an extract brewer. I just completed fermentation for the first time in my new conical. It started with 5 gal. 2 days after pitching yeast, I purged the trub. After a full 12 days later moving it to the keg, it appears I did not purge enough and ended up with only 3.5 gals without adding any trub to my keg. Did I purge to early? Should I use more muslin bags with my hops? How do I get my keg full with 5 gallons if I am extract brewing 5 gallons. I make sure I have added water post boil before cooling to assure I have 5 gals. How much should I purge? Is 2 days after pitch too soon? How can I assure I have a full 5 gal keg after fermentation?