The adjustable and extendable FX Spray Bar Kit connects quickly and easily to Fluval FX series canister filters to ensure water is diffused evenly to all areas of the aquarium. This helps to promote a healthy gas exchange, carry nutrients to plants, and improves overall water quality, filtration performance and fish health. The unit can be positioned above the water line for added surface agitation and increased oxygenation, or below the water to create a gentle and consistent current.