I love to make Belgians and I make 3 gallon batches as that's a sweet spot for me in terms of consumption. My issue is that WLP530 is a monster and always blows out the top. Now, I can set up and blowoff tube but then that needs to be cleaned up too. I was wondering if there are any issues with getting a 5 gallon fermonster and putting my 3 gallons of wort in there to ferment. I'm thinking the extra headspace would help keep my mess contained. Any issues with underfilling a fermenter by 40%?