Hey Guys, just wondering if there are any experienced kolsch fans out there that can recommend the best yeast to use? I have used one of the safale/larger brand ones before although i cant remember which one and also a white labs german ale/kolsch yeast. Both were quite good, imperticular the...

So im brewing an IPA and for the first time i used x2 packets of yeast (US05) as called for by the recipe. After 17days im still getting regular action through the air lock however the gravity has remained the same for over 3 days now. So confused and not sure whether to bottle or wait a while...