I just brewed my first batch on 10/01. I cloned the dogfish head 60minute recipe found here. https://www.homebrewtalk.com/f69/dogfish-head-60-minute-clone-ag-extract-25709/. Everything went well I suppose. I used 13lbs of grain and cooked @ 150deg. for an hour then began my boil with constant adding of hops. I started fermenting once the brew cooled to 70deg. My question is how long before i add the dry hops? And my airlock is still bubbling but significantly less than it did a couple days ago which i guess could be normal?