Started a batch 6 days ago. The airlock bubbled like crazy for the first 3 days, since then nothing. I tested with the hydrometer tonight and it read 1.010. I'm guessing the fermentation is done. I noticed a lot of sediment around the sides of the bucket above the beer. Is this normal? Also I noticed a green apple smell when I opened the lid. Should I leave it in for a little longer? I seemed very carbonated. If so, how much longer? I will only be doing a primary fermentation. Thanks!