These compact, energy efficient, quiet corner filters are cleverly designed for high volume mechanical and biological filtration to help keep water crystal-clear. Integrated diffuser with three adjustable water flow settings – Allows for uniform surface movement, prevents formation of biofilm, and provides added aeration. Simple cleaning and maintenance – Remove individual filter modules while keeping the pump unit in place for easy cleaning and maintenance. Carbon filter foam – Activated carbon absorbs unwanted substances in aquarium water. Carbon filter foam makes replacement much simpler than using common granular carbon. Quiet operation – Sound dampening design. What’s in the Box – Aquarium Filter, filter media, integrated diffuser, suction cups, and power cable. Made in Italy, backed by German engineering. Suitable for aquariums up to max. BioPlus Thermo not available.