Make sure that all parts are properly tightened but not overtightened, this has been a known issue as a result of user error.
Pulled it apart and put it back together and nothing is overly snug and still some seepage from under the glass going onto the AFC ring. I'm just having bad luck with this tank in general between the leaking and then my reducer/beauty ring locked onto the AFC base and not being able to come off.
Outside of the flaws, the tank is fantastic but I just feel as if I never have good luck with Kanger in general as I don't feel as a consumer that they have decent QC based on all my purchases with them.
I switched to Aspire to get the original Nautilus after I had constant flooding/gurgling issues with my Protank, then skipped the Protank 2 and got the Protank 3 and same issues and then gave the Aerotank a try and same issues again plus adding my airflow control ring kept seizing to either full open of full closed and had to replace 4 of those bases, luckily they were able to be had for about $3 a base then.
With Aspire, never had an issue with their tanks unless it was a self-inflicted injury like dropping my mod and breaking the tank or the base due to it falling and hitting the ground. I didn't exactly always love the original BDC coils but the tank as a whole always worked as it was supposed to.
I feel Kanger is on the right path, they just need to work on their design a bit more to make sure the products work properly. The slight leaking appears to be caused by thin o-rings and not being able to hold a solid seal. So make the next gen with better o-rings and problem solved. Or better yet, do what they did when they redesigned the Aerotanks (Mega, Giant, Geni, etc...) and offer a one piece steel option and either sell it separately or include it with the package and charge a couple dollars more if needed. OR, do similar to what Aspire did and sell steel/glass combo toppers so you can see what's in your tank. I own one of those toppers for every one of my Aspire Nautilus, Nautilus Mini and Atlantis tanks. I love those toppers, they can take a beating and you can see how much juice you have plus they're all one piece units so you don't have to take apart multiple pieces to clean it which is less parts to potentially break.
Just my $.02