Congratulations. I see your from Clarksville. I entered an APA and a IPA in the MCBO (first comp also) but did not place. I am just glad to get some feed back on my beer though so I can improve.
Sent from my iPhone using Home Brew
First what is the fermentation temp? If the temp is to high it can cause a rapid violent fermentation. It doesn't look like you have anything to control your temps. If so I wouldn't put the blow off container up high like that because when fermentation slows if you have a rapid cooling...
It was a used carboy. It definitely didn't bang on anything. I agree glass just doesn't break on its own. It had to have some unseen damage. I guess the weight of the water with it tilted just right one of those one in a million things.
I usually clean my carboy outside in the yard but it was below freezing so I decided to do it in the bath tub. The carboy was to tall to fit under the faucet so I tilted it to fill with some water. It was still on the ground just tilted when it all of the sudden shattered into pieces. Cut all...