We are in the process of draining/renovating our spring fed pond. The water level is down to just inches. It is currently iced over pretty well, but there is a metallic orange sheen on the soil and frozen in the ice. It is mostly located to the thinner South (creek) side. Curious if anyone knows the following: 1. What causes this? 2. Is this a problem? 3. How can I correct this?
