Hey guys, first post second brew. My first brew seems to be going fine. After racking to a secondary I brewed a batch of English brown( brewers best kit) and seemed to go well. Aerated the heck out of it by pouring back and fourth and mixing a lot. Wort was 72 when I pitched a packet of slightly cooler rehydrated dry yeast. Next morning airlock was bubbling very well. Work 24 hr shift and on day 3 in the morn. , no activity whatsoever ! Don't know what to do from here?