Iv'e had my Solsun (Oberon clone) in my primary for 3 weeks now and was going to bottle it, but am not sure why I still have a bubble through my airlock every 20 seconds. With some kind of obvious fermentation still going on should I wait to bottle? The recipe uses wyeast 3724, and I have been able to keep my fermentation temps between 64-66* for the full 3 weeks (recipe calls for 64-68*) I did not try 3 "days in a row" of the same hydrometer reading because fermentation should be done within 3 weeks... or so I thought?