I am using distilled H2O
I may add humidifier Bacteriostatic if things start to grow. I have been running with just water for 2 weeks with no ill effects.
I am testing "Original Bt" Bacteriostatic from Lowes undilluted on a penny to see if there is any corrosion. My system is copper WB and copper Rad.
BTW foam in your system will cause temps to rise..
|