suckback

is there any general guidance for the volume of gas being sucked back when cold crashing? E.g. if I have a 6.5g carboy and 5.5g of beer, and I cold crash from 68F to 35F, what volume of gas should I expect to suck-back? if this is pretty constant and predictable, I'd like to create a large...

I put together this blow off system that should prevent suck back and oxygen from entering the fermenter during cold crash. I can do two things: add sanitizer to the first jar, keep the 'in' hose connected to the short tube and the 'out' hose connected to the long tube. This way the CO2...

I'm very new to brewing, and I'm making mangrove jack's blueberry cider, and when I started bottling, I had forgotten to take of the airlock/open the lid, so the water from the airlock got sucked in the fermenter, (i have a tap in the bottom of my fermening bucket) so I'm wondering if anyone...