Hi, appreciate what u have put out into the forum.
If u got time for quick reply, as I cant find original topic now
So why condensation is bad inside of laser tube?
Does it also cause bubbles which might cause heat stress in the glass later on?
I saw condensation on my tube when coolant temperature was around 12-13C, so I suspect this might be a problem in future and I might need to add an aquarium heater to my water reservoir, to keep the temperature at the suggested 18C