Well got home from work, and as always the first thing I do is clean out the skimmer, check the temperature of the pond and then get all the leaves off the top of the pond. As I am doing this "The Crew"...... AKA Our Koi babies followed every move I made..... When I finished I sat down and put my hand in the water and they all came up and most of them sucking on my fingers, it was all I could do not to grab the Honey Nut Cheerios.....but I didn't, water temperature 55 degrees, and lows next week in the 20's..... But they are doing a great job of cleaning the liner, the rocks at the base of my waterfall and they are even cleaning the black stuff off my Rock on a Roll.....lol