Small yet powerful aquarium surface skimmer for fresh and saltwater aquariums. Effectively removes the surface film and have a crystal clear water surface in order to improve oxygen exchange. The inlet float automatically adjusts itself to the water level and ensures an always clean water surface. Flow rate can be adjusted. Semicircle design, does not occupy the space. Compact dimensions make it the ideal skimmer for nano aquariums and other small tanks. Compatible with hang-on filters and canister filters. Design for disassembly, easy to install and clean.