I posted before but can't figure this out. 1/4 acre pond. Dug about 6 years ago. 12 feet deep. Put 30 bluegill in and after ice out there were 4 dead ones floating. No signs of the others. Now it seems my Tadpoles are all bloating and dying. Clear water, cattails, and signs Of muskrat. I've asked for where to get water test kits and suggestions on what wrong and the only answer I got was to drain it and dig it deeper which is not an option due to money. What is going on and what do I do to start figuring out the problem? tHanks!