Well, the various Internet sources I consulted were right. Almost a total (watermeal) takeover in a matter of days. The very hot, unusually humid weather was probably a big help.
Not sure how worried I should be. The flowforms should be looking after the aeration and the watermeal cover may even help the water temperature remain lower than usual.
A few duckweeds evident amongst the watermeal.
In a week or two, we should be almost overrun with Muscovy ducklings. I wonder if they'll eat it? Approx. 45 eggs being incubated by three separate ducks, at the moment.
I spotted a rat in the orchard, this morning, so the bait stations went out, quick-smart, near where the ducks are nesting.
