I recently purchased a 7 cu ft chest freezer and an inkbird temp regulator which has been working great, but now that my fermenters are in a sealed location, I'm noticing that the airlocks are sucking back in alot of the liquid. It seems when I add more liquid to them, it drops again within 24 hours. I use 3-piece airlocks. I know the issue has to do with atmospheric pressures in there, but what are some ways to combat this issue? Is it even an issue? I use sanitized water in my airlocks, sometimes vodka, so I know contamination is very unlikely. And, the water drops about half of what the airlock "requires" (photo attached). This is oddly the only fermenter that still showed bubbling with this suck back problem - not sure if it had to do with the StarSan solution I squirted in or what, but my other fermenters did not bubble after the liquid dropped. Is this something I need to find a solution to or does the amount of liquid leftover still keep my beer safe from Oxygen, CO2 release, etc.