Originally Posted by Kevin K
I'm going to be doing partial boils (extract) and I'm wondering if my 6 gallon carboy will be big enough for a primary fermenter? Think I'll have enough room for krausen?
I plan on rigging up a blow off tube just in case, but I'd hate to find out that it's too small once the brew is already chugging away.
It'll be close. My primaries are 6.5 gallon, and I've usually got lots of room to spare at high kraeusen.
If you've got a blow-off, then there is nothing to worry about anyway. Just use it for a few batches before deciding if it's necessary or if an airlock would be fine.
I bought a 6 gallon carboy for my wine, but was thinking that I could probably use it for a beer primary if necessary.
FYI: judging by the marks I put on my carboys to measure volume, I usually get 0.5 to 1.0 gallons of kraeusen on my batches.