Yes seeing the krausen was very reassuring. And after some very steady and gentle rotations of the fermentor pail, bubbles did appear in the airlock ;-) just to be on the safe side I duct taped around the seal of the lid and made it certainly 100% airtight now. As for hydrometer readings I was scared to let go of the bob as it seemed like it would slide down to the bottom of the fermentor and getting it out would certainly be a high contamination risk I thought. Would it float if I let go of it? The sheet that came with the hydrometer said to add the value of "2" if the beer temp was 70 degrees, which is what the thermometer attached to the side of the bucket is reading. Gonna let it ferment for 10 more days before doing the dry hop. Or does fermenting for longer start to hurt the beer? My recipe called for "5-10 days fermenting, then dry hopping, then 5-10 more days before bottling, then 2-3 weeks in bottle before drinking".