I sanitize my Carboy last night. I was going to add beer into it this morning, for a 2nd fermatation. The is some water on the side, like condensation. Do I need to wait until all the water droplets are gone, or can I just add the beer
If you sanitized the carboy with a no-rinse sanitizer then you should use it while it is wet. Once a sanitizer has dried on the surface it no longer protects the surface from re-infection. I sanitize my equipment with Star-San immediately before using it and fill a carboy or bucket directly through the foam residue.