well I started with grapefruit juice and shaved grapefruit rines. The primary fermentation went fine and after one week I moved it to the secondary. I'm not sure what the specific gravity. I haven't opened the bottle to check. will air pressure cause suction?
I started my first batch of wine. I used a three gallon better bottle but only filled half way up during the secondary fermentation. The balloon was nice and full for about two weeks into fermentation. Now it has sucked into the bottle and expanded to fill nearly all the empty space inside...