What Temperature Should My Water Be?

[Shenton]

Hi i really hope someone can help me as I am new to this I purchased a Chinese 60w laser engraver just before Christmas. I have been running it in my garage and it's been very cold recently I noticed that the lasers power seemed less than before then last week when I came to use it there was huge sparks and the tube was arcing to the casing I have since purchased a digital temperature gauge and this tells me the water is 3 degrees. Do anyone know what is the best temperature to keep the water at and do they think it was the cold water that has broken the tube?

[LINUS]

The best temperature for co2 laser tube working is 20℃~30℃.As far as I konw low temperature did not cause broken the tube.But the water freezing?Water expands on freezing cause breaks laser tube.That is why antifreezes are necessary