I have a Question. I got a northern brewer kit with a bubbler airlock. Instructions say to fill with star san which i did ( to max line). However it all seems to have foamed due to i assume the co2 creation. Do i need to keep filled or just leave it?
I would just leave it, as long as the CO2 is escaping its a good thing. The star san may not be completely necessary, I have used plain water and also a cheap vodka. I would leave it and make sure the fluid stays at the max fill line.