When I make kimchi, I let it go for a week or so..(it's fun, you can see it bubbling..) Apparently the more traditional method is to store in a cooler place for a longer ferment
Did you start your vegetables off in a brine of Sea Salt and water(as in the kimchi recipe)? or an alternative is to REALLY salt the vegs(draws water out of vegs, this is how to do kraut) & weight them down...Either way, make sure the vegs stay submerged... :)