Whats the oily like stuff on top of my pond at this time off year?
when you look across the top of pond there is a sheen that looks like oil on water but it is not oil any ideas
It's what happens when plants and fish poop decay. The water, full of organic matter, has a sheen on top. Might be time to clean some of the decaying plants and fish poop from the bottom.
The sheen will not hurt anything, but it is annoying.