Ewest, you're prompted me a little. I got two northern pond "volunteers" after that last Pond Boss magazine article. However, neither was ideal in that both were already feeding. So, Dwight and I put our heads together and I think we are coming up with a modified plan. We're thinking we should compare the dissolved oxygen over the winter in those two ponds that do have feeding to Dwight's pond (no feeding). Dwight's Pond, with its long history of DO measures, can be our "control" or comparison pond. I think we could learn a lot. I haven't checked with our two "volunteers" yet on this plan, but based on preliminary contacts, I think they might be interested. One of them is a forum regular, so that will be fun.