Swapping out my family's crock for a trendy fermenter was a HUGE mistake.
I grew up watching my mom ferment cabbage in a heavy stone crock with just a cloth tied over it, and it always turned out perfect. That old method let the ferment breathe so we never dealt with pressure build-ups or messes. Last fall, I decided to upgrade to a fancy glass jar kit with a sealed lid and a little airlock thing. I thought it would be cleaner and more modern, you know? But after about ten days, the pressure got so bad that the lid popped off and sprayed kraut juice all over my kitchen ceiling. The cloth cover never did that because it allowed gases to escape slowly and safely. Now I'm back to using the crock, and my ferments are trouble-free again. If you're thinking about switching to those new kits, maybe stick with what works from the past. Trust me, cleaning briny liquid off your walls is NO fun.