I was at Salamonie's website, checking out their stuff on there and I found some data that they collected in August. It turns out that there was no oxygen below 15ft. ??? I didn't think Salamonie would stratify that much! The thing is, I'm positive that I've caught cats around twenty feet deep outta there during summer months. And I think those were during times of regular pool level. Anyone else catch em below 15ft this summer?