If you discover that your tank is leaking out from the battery connector air hole...don't panic! Simply remove the tank from the battery, turn the tank upside down, wipe off the battery and the carto connector thoroughly. This is caused by juice flooding the air wick tube and juice will start to siphon the tank through the feeder holes.
By turning the tank upside down the feeder holes will be exposed to air which will stop the siphoning action and stop the leak.
Just like a standard cartomizer you should always be able to look through the cartomizer to see that the air tube is clear. If there is juice in the air tube that you want to remove simply remove the tank from your battery. Take a doubled over piece of tissue or paper towel, place it over the Drip Tip and give it a couple hard draws. Do not attempt to blow it out as this will pressurize the tank causing the juice to leak out of the air tube.