Get peak performance from your skimmer with the official Reef Octopus auto neck cleaner! Octopus motorized (ANC) Automated Neck Cleaner helps keeps your octopus protein skimmer running at peak performance by periodically wiping the inside of the neck where all the bio-organics usually would accumulate. This great skimmer accessory not only keeps you skimmer running at peak efficiency but save the timely chore of keeping your skimmers neck clean. As you know, build up in the neck causes foam to stick to the sides and restricting the collection of skimmate within the skimmers cup. Keeping the neck wall clean results in consistent skimmer performance and little to no down time. This device uses twin squeegees to automatically remove the buildup from a skimmer neck. The (ANC) Lid consists of a high torque low RPM motor, wiper mount, lid with mounting clamps and the squeegees. To operate this easy to you device, you simply plug the unit into a timer (not included) or aquarium controller and set it to run for a few minutes 4 to 6 times per day. By running it this way you will never experience crud build up along the walls of you skimmers neck. This will eliminate the daily chore of cleaning for two or more weeks while maintaining the level of skimmate production that you would normally get with only a freshly-washed collection cup. Fits the Following Reef Octopus Skimmers SRO3000int/ext, XP2000sss/ext, NWB/DNWB200, XS200, EXT200.