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Question: My airlocks have brine coming out the top. Can I simply let it go and not open it to clean it out as long as there is still brine available?
Document: I made saur kraut and zucchini pickles. Both came out great except for the portion that was not submerged in brine. With the zucchini pickles, some of the pickles still floated to the top, which is why you need something to weigh them down. The top part of my kraut that did not stay under the brine went moldy.
Sauerkraut can ferment quite strongly and will often get brine in the bubblers. These are easy to clean which is a must for safe fermenting. I chose to get these rather than make my own simply for convenience. The fitment and construction is perfect and I recommend them to any home preserver who ferments.
These are easy to clean and fit any wide-mouth jar. I much prefer using them and my own jars to having to purchase a full system. They seem very durable and should last a long time. I got one set of three for my birthday and had to buy myself a second set to keep up with all the fermenting I want to do.
Made my first batch of kraut following the instructions that came with the kaps and it turned out great! I let mine ferment for about 4-1/2 weeks, still crunchy but very "krauty". Kaps came apart and cleaned up easily, ready for the next batch!
I could see how they would crack very easily. They would flex with the slightest of pressure. Luckily I had ordered a set of 6 replacements for less than $1 each. They arrived the following day and I swapped out my airlock on the ferment. The new airlock outer walls were easily twice as thick and still very inexpensive. At the prices charged for these Kraut Kaps, I really expected a better quality airlock. If you are ordering these I would recommend pricing and ordering replacement airlocks along with your order of Kraut Kaps.
There is also a silicone sealing band that may be removed and cleaned. Presumably to make sure the lid seals airtight to the jar. This lid appears to be a Ball type BPA-free lid. I loaded my jar and started a ferment. Later in the day I noticed several hairline cracks on the airlock chamber. I looked over the other two airlocks in the kit and they had hairline cracks on them as well. These cracks were clean through the thin plastic outer wall. My initial reaction was that the airlocks were extremely thin and cheap.
I have just started doing some lacto-fermentation - a scary proposition - scum, mold, icky things growing that shouldn't. On top of that, having to burp the jar every day was not going to cut it for me - I work and wanted to be able to just leave the bottles to do their thing. These are easy to use, easy to clean. I didn't have to worry about the water evaporating  - it didn't happen. Only drawback is the rubber gasket on the inside of lid turned brown because of the tannins in the grape leaves I used.
These Kaps are terrific for anaerobic fermenting. I chose them because I've been reading about the advantages of creating an anaerobic environment when making sauerkraut. I already own plenty of wide mouth mason jars of varying sizes and these fit perfectly. They come with a white cap that screws on to the mason jar. On the bottom part of the cap is a removable silicon gasket that ensures a good seal. The airlock on top is easy to fill with water and to clean.Shipping was exceptionally fast. I had some concerns about the airlock and the seller was prompt in her response and ensured I was satisfied with the product.Fermenting with these Kraut Kaps is easy and fun; last time I was at the grocery store I spent a lot of time in the veggie section trying to decide what besides cabbage I was going to ferment!
The product arrived in a timely matter and was just what had been described. I know have some kraut (1 cabbage and 1 beet) almost completed. The airlocks have worked well and I don't have trouble with yeast or mould overgrowth as I did with most of my pre-airlock batches.I'm grateful
I have been fermenting for a long time without these, so they are not a necessity, but I do really like them. I feel you get an overall better ferment with less unsuccessful attempts and no mold when you use these. I'll likely get some more when we're able. They are a bit expensive.
Answer: The beauty of the 3-piece airlock is that it is easy to remove and clean without "upsetting" your fermentation. The brine in the airlock can spoil due to direct exposure to the air. Cabbage is a very active fermenter so it is normal to get brine in the airlock. Did you have a weight on your kraut? Holding the ferment down helps keep the airlock brine free. Despite the advertised "set it and forget it" nature of the Kraut Kap, I find it helpful to remove the lid and push the air out of the biomass so it doesn't rise and push the brine out. I do this until the fermentation slows down, usually the first3-4 days. Once that high activity phase is over, you can just leave it alone. The airlock will be doing its main work during the next 2-6 weeks the sauerkraut ferments- preventing potential airborne contamination during the long slow phase.