[HybridHerp]

I still have some time to mess around with a few little things, just wondering what you guys prefer to have in your bubble counters. My counters are both all glass btw, if that makes any difference or anything.

 

[BenderBendingRodriguez]

Water.

 

[BriDroid]

Water.

I never liked the idea of "oil" or other fluids in the CO2 lines.

 

[Darkblade48]

I use water; some people use glycerin or mineral oil since it does not evaporate like water.