So I've got 10 gallons of a Black Butte Porter clone sitting in my fermenter and I'm looking for Advice. I used 2 packs of Ringwood Ale Yeast, Wyeast 1187, in a 2.5L starter. The packs were older, back to April, but still had some swelling before I added them to the starter. I started them at 68 degrees and yet here I am almost 3 days later with no activity. I was out of O2 so only aerated by shaking. I am fermenting in an SS Brewtech Unitank, should I used the carb stone to add dome O2? Is ringwood ale typically slow to start?