I had a previous question on bottling my Solsun Ale after 3 weeks in my primary here https://www.homebrewtalk.com/f39/3-weeks-airlock-still-active-109842/ since my airlock was still active (bubble every 20 seconds) I decided to take a gravity reading and found out it is still fully covered with a nice thick layer of kraeusen!! My question now would not be when do I bottle but why do I still have kraeusen after 3 weeks? is it just fermenting slowly due to me keeping it at low 64-66* fermenting temp? Should I wait it out? or move it to a warmer room to speed fermentation up? rack to a secondary? Does 3724 take longer than other ale yeast? My other 4 batches started clearing between 7-14 days but all were done in a warmer part of the house.