I brewed a batch of IPA yesterday and when I checked on it today it had started to blow-off. There is so much pressure in the primary that it has spilled up through the airlock and is constantly whistling. Should I be concerned about this? Is there anything I should do to correct it?
The beer is a modified version of this recipe: http://hbd.org/discus/messages/15516/16500.html?1054613895
The modification was to use liquid malt extract instead (10 lbs) and substituted Wyeast 1056 (American Ale) and was made at the recommendation of my local homebrewing store.