Broken Laser Tube

So, I purchased a new Cloudray 90W laser tube and power supply, get everything installed and after 5 days of very little use, the tube end exploded. Running 40% power, chiller set at 22 Degrees C, was working great until I heard a pop. Has anyone experienced this with a brand new Tube from Cloudray?

How long has your tube been working?
It is possible that water temperature is too high due to long working time, causing the tube to explode.
It is also possible that your water protection is not connected or is malfunctioning.