just finished one of my bottles that were carbed per the calculator. Only bottled for one week and in the fridge for about 4 hours, long story short...it's carbed "wonderfully". Tastes great too. my other test is to give one of the calculator carbed bottles to a friend at work that knows IPA's. I'll remove all labels and wait for his critique. Tomorrow morning, I'll put one of the post carbed bottles and open it up in the evening. Hope it's not a bottle bomb. Was watching Caddy Shack II as I typed this and the movie sucks.