The Tunze Skimmer Cup Holiday is a specialized lid designed to replace the standard collection cup on the Tunze DOC Skimmer 9004. This accessory enables the continuous, remote collection of protein skimmate, diverting it to a much larger external container. It effectively eliminates the need for frequent emptying of the standard skimmer cup, providing an essential automation solution for nutrient export and system stability, particularly when the aquarist is away from the tank for extended periods.

This kit comes complete with an appropriate hose connection fitting and a generous 2-meter (78.7-inch) length of flexible silicone hose. The design allows for the accumulated foam and skimmate to be directed into a separate vessel, such as a large bucket, a dedicated collection container, or even directly into a floor drain in advanced setups. This significantly increases the skimmer's collection capacity beyond the limits of its original cup, preventing overflows and ensuring uninterrupted performance.

The Skimmer Cup Holiday is an invaluable tool for reef keepers going on vacation, providing peace of mind that their skimmer will continue to function effectively without manual intervention. It is also an excellent upgrade for professional systems, larger aquariums with heavy bioloads, or any hobbyist who wishes to reduce their daily maintenance routine. By automating skimmate removal, it helps maintain pristine water quality and a more stable aquatic environment with less frequent hands-on effort.