Well.. for the past day Ive noticed a "film" of the surface of the water in my tank.. Not sure where it was coming from so decided to do a 50% water change and to check on the decor I had inside.. well while washing off the Log I noticed some staining on my fingers and on closer inspection noticed some of the paint or whatever it is on it has flaked/corroded off.. he doesn't sleep in it just uses it as a tunnel to swim in and out of.. but still .. I'm not happy that this happened.. usually zoo med has good products.. anyone else has had this issue??