The Fluval Spray Bar Kit is used to diffuse water throughout the aquarium, increasing surface agitation and improving oxygenation that is essential for a healthy aquarium. This kit is specifically designed for Fluval 07 and 06 performance canister filters. It increases the amount of oxygen in your tank for healthier fish and plants, and distributes water evenly for delicate aquascapes, eliminating dead spots in your aquarium. The spray bar attaches to your filter outlet with a hose adapter (all attachments included) and is extendable from 15-30 inches (38-76 cm). It can increase and decrease surface agitation depending on the water flow.