Well slick,I too am interested to know what was causing the buzzz??? Gas not mixed correctly?? I am getting ready for my advanced open water diving class real soon. From what you explained I think I have felt that feeling this summer in an open water dive. We were at 30’ and the water was ugly to say the least at one point my dive buddy kicked up a whole bunch of junk off of the bottom,cutting my viso down to were I could not see past my mask! I felt like I was sitting too close to a fuzzy television. Then I started feeling very dizzy. I couldn’t tell if I was upside down,backward or what!!! It was kinda funny after the fact but I’m not exactly looking forward to that happening again lol!!!