The Velda pond skimmer simply floats on the surface of the pond and collects debris and waste. The waste is sent to an internal basket which is easily removed and washed. The skimmer has an integral 2000lph pump that can handle large quantities of water easily without clogging. It's best use is on a pond with 20m^2 surface area.
The efficient skimmer will even remove duckweed so it's a great addition to your pond over the warmer months when algae can become a problem. The skimmer will also remove algae causing nutrients, therefore lowering the risk of an algae invasion from the very start.