Hi everyone. I know airlock bubbling doesn't mean everything but just wondering if anyone knows if large primary headspace impacts on activity? I've brewed a beer I've done before with same yeast as before but in a small scale, 12l, in a 23l FV. Yeast pitched yesterday. After 24 hours last time I noticed sig activity. This time nothing. Does the space the CO2 have to fill impact on activity? Cheers in advance.