Greetings all, Been lurking for a while, reading posts, checking out recipes etc. , when it struck me how many times in post I noticed someone reporting their gravity readings taken every 1-2 days. I was taught to not open fermenter anymore than necessary, after i put lid on I open it up once after 10-12 days to make sure it is ready and then on bottling day. My question being , was I told wrong? Does opening a fermenter every 24-48 hours have no effect on beer? I am a bit anal about sanitation/contamination so is it just me? Is dipping into beer so often during fermentation not a possible source oxidation? thanks for responses, even those who will respond without actually answering question.