So I'm fermenting 2 different 5 gallon batches of cider right now. Each have 5 gallons of treetop apple juice and half a packet of Nottingham yeast. Batch it is just juice and yeast and is fermenting in a plastic bucket. Batch two is in a glass carboy and I added 1 pound of white sugar by heating a gallon of juice to 160 and then dissolving the stuff. Neither batch has any yeast nutrient.
Batch 2 is still bubbling away. Batch one has stopped and the gravity is at 1.026. A couple days ago it was at 1.028. It fermented like crazy and blew all out the airlock but now there are no bubbles at all. There's a small chance it could be leaking out of the lid since there's no gasket but I've never had this problem with this bucket in the past.
Can I just add yeast nutrient to batch 1 to make it pick back up? Whenever I take samples for specific gravity the stuff is carbonated, so I have to let it go flat before the test. Also why is batch 2 still fermenting just fine?