Originally Posted by Stout63
Is it ok to open the lid w/o contamination?
Of course it is. I mean, you do plan to open it sometime, right?
It's good to be careful, and keep it airlocked and sanitize whatever touches your beer. You don't want your cat to sneeze it in, but it's ok to open and take samples and transfer when needed.
It's probably just fine. It's probably fermenting just fine. You may notice a ring of crud around the top when you open it, showing where the krausen was when it was at it's peak. But the only way to know for sure is to take the SG.