CO2 During the day
OK! I'm using a AC-50 HOB as my CO2 reactor. I have read many people turn off their CO2 at night ours or when the lights are out. Would there be any ill effect if I was to connect my HOB AC-50 to the light timer? Also the CO2 that will just bubble into the filter at night, the CO2 that escapes into the air, is that bad for humans to breathe?