Royal Exclusiv Bubble-King Skimmers are undoubtedly the best Protein Skimmers in the Industry. All other skimmers in the industry aspire to accomplish what Royal Exclusiv has with the incredible performance and low-watt consumption efficiency in their lineup of Bubble-King Skimmers. These skimmers are totally different from all other skimmers. The diameter of the body ranges from 200 mm to 650 mm with all tubes made of “GS-Plexiglasrohr” (Acrylic) that has a thickness from 4- 6 mm. State of the Art Oxygen partition plate located on the bottom with injection pan and conical counter bored holes for clear turbulence reduction. The Skimmer flotate cup is one hand solvable and because of CNC-lathed screw connections and a 2.5 mm silicone seal it is totally sealed and salt creep free. The height to remove the collection cup is Only 20 mm. Integrated discharge adjustment for perfect water height adjustment inside the skimmer gives total control. Powered by the famous Red-Dragon ® pump with standard anti-lime bypass, Titanium screws, nozzle and acoustic waves uncoupling system, there is no pump in the world that operates this Super Quiet - only 46 db, and is hardly audibly - and at the same time gives power and performance with only 38-78 watts. Super Low maintenance because the nozzle is the only attached part. With some of the highest rates of airflow injection, the Bubble King Skimmers cannot be outperformed!