The Swim Skim is a great thing that should be in every larger pond. In my pond runs only twice and a half hours a day that's enough for me. So a clean surface, I had never. Pollen, leaves and other things that fall into the pond everything no problem, they are captured by the Swim Skim. Just great the part and the price also beat !!!!!
Some people reviewing Swim Skim bad because they obviously have not read the description (handling) correctly, you do this then it works well.