A few minutes of 103°F will not kill but it doesn't take very long to kill at 105°F. It does make a difference whether it is still air or forced air. High temps in a forced air incubator will kill quicker than in a still air because the air is stratified in a still air and hot and cold areas are much more common than in a forced air incubator.Thanks. I'll stop stressing over 100.3 then.![]()