Hey guys.....newbie here and had an explosion. I brewed an English Nut Brown Ale last night and 24 hours later I found the top to my 6.5 gallon primary on the floor, beer all over my light fixtures and fridge. I saw my air lock going crazy earlier but thought it was normal as this is my first brew. I sanitized the top and air lock and put them back into place. I heard the top pop off and ran in to check it so the beer was uncovered for about 5 minutes. What are the chances of infection and should I do anything to keep the top from exploding off again?