It will take Fosters and Smith several weeks to replace my cracked bubble counter. I am running the CO2 without it, at what seems to be a modest diffusion level. Any problems with this? And, no, I don't have an indicator in there....
as long as you dont change the injection rate then it is fine. In fact that is the only eason i have one, because when i change the cylinder over, i try to get the BC rate about the same as previously, otherwise there isnt much point to them