Hi everyone I primarily use vivi nova tanks however I believe I've noticed this with ego clearomizers aswell. It has generally been about 30 degrees when I go to work in the morning then it warms up into the 50s and 60s by 10 in the morning. I have found on a few occasions that my tanks will start to leak from the threads however it doesn't do that any other time. The tanks have been in several different positions when I notice this also. Has anyone else had this issue before?