Remove organic wastes in aquariums up to 30 gallons with the Aquatic Life Protein Mini Skimmer. The ideal protein skimmer for nano-tanks， it can be mounted inside the aquarium， and it’s also small enough to fit in most rear overflow or filtration compartments. It’s powered by an 8-watt needle-wheel impeller pump for maximum air-to-water contact and energy efficiency， working to deliver very effective organic waste removal. Water flow can be adjusted at just the turn of the knob， and it comes with a mounting bracket and suction cups for your preferred placement.