Would a 6 gallon carbon be big enough for a 6 gallon batch? Or would I need something bigger?
You might want to get something bigger, or just make a 5 gallon batch.
Although if you fix a blowoff tube onto it, you'll lose a ton of your krausen but should make out alright.
Is it a true 6 gallon, or the 6.5 gallon acid carboy? The true 6 g will blow off a ton, but the acid carboy has more than enough headspace.
Just in case you are in the market for one, and don't already own.
It's a true 6 gallon. I guess I will just use the 6.5 gal bucket I have
It will just blow off into the over flow and just waste beer. Need to get a 6.5 gallon.