Charlie, look here for the numbers,
O2 Table from YSI At 84f with no salt or Chlorine, about 7.69 PPM is what I read.
Actually highflyer you can get supersaturation rates from algae blooms that exceed that. I suspect that may be what is going on here if the readings are accurate. It would also explain low oxygen readings below that due to a combination of an algae bloom blocking out sunlight, and decomposing vegetation below from too aggressive of a herbicide treatment.
Anyone else concur? And no hard feelings if you totally disagree.
