5 gal Porter, 5 gal RyePA, 5 gal Saison, 5 gal RIS, 5 gal Blonde, 5 gal Hefeweizen, and doing 5 gal of Mild tomorrow. I may have forgotten a couple batches, but i will update if i remember them.
So: 49950+35=49985
Oxidation gives more of a cardboard off-flavor, so i would doubt that this is your issue. Not to mention you have to aerate your wort before pitching yeast anyway, they need the oxygen for reproduction
I worked at an indoor pool throughout highschool as a lifeguard/swim lesson instructor. I didn't believe the people who said the place was haunted at first but the first night I closed (after making sure the place was empty and all doors were locked) i definitely heard splashing and laughter...