white smoke on startup?

[JimSuperSix]

Erm, I have checked the radcap, the water is clear and green and at the exact same level it was when I put the new head on it 2 years ago.

[JimSuperSix]

I've just noticed that I posted the exact same thing in August 2005, so perhaps it's just lack of use between injector flushes that causes this...