The Fluval Spray Bar Kit is a state-of-the-art attachment designed specifically for the 06/07 Series performance canister filters. The unit attaches directly to your filter outlet via the tubing and hose adapter that comes standard with the kit. At great benefit to the plants and animals in your aquarium, the spray bar is designed to dramatically increase the oxygen levels in your tank by creating surface agitation and evenly distributing water over your delicate aquatic landscapes. For greater versatility, the unit can be submerged and if the desired impact is to have gentle, consistent water movement or the unit can be placed above the water to create bubbling surface agitation for optimal oxygenation. The Fluval Spray Bar is extendable between 15 and 30 inches and effectively eliminates any "dead-spots", spots without any filtration or surface agitation, in your aquarium. Well suited for both freshwater and saltwater environments.