Improve your aquarium's water quality with the Fluval Add-On Surface Skimmer, designed for use with AC20, AC30, and AC50 Power Filters. This efficient accessory removes oily surface films, dust, and organic waste that can cloud your water and reduce oxygen levels. By enhancing gas exchange and light penetration, it promotes a cleaner, healthier environment for fish and plants. The self-regulating, floating intake automatically adjusts to fluctuating water levels, while the protective strainer keeps fish safe. Easy to install and maintain, this compact, clear skimmer attaches directly to your filter intake stem for continuous surface cleaning and improved aquarium performance.