Thanks for the safety concerns and I will judge the ice carefully or use the techniques mentioned. If the pod was originally 8' as the neighbor mentioned, and there is 3' of muck, as one of the contributors guessed, then the 5' guess would be very close. Let's see when I can get a measure - next week is supposed to be consistently in the 40s so we should get some melting.

Since finding this site, Pond Boss, last week I have been doing a lot of reading to learn about this new adventure - a pond.

Obvious from the picture, the whole pond had a thick layer of FA on it. What happens to this in the winter? What should I expect when the ice melts? How quickly will it come back?

Should I try to get some circulation going right away to improve the oxygen in the water? Does O2 in water keep FA from growing? What about nutrient levels - how are these measure and controlled?

Boy do I have a lot of questions....

Thanks for your help!