-Package including 1 Pressure filter with integrated uvc 1 Spiral stepped hose adapter 1 ½” transparent 2 Spiral stepped hose adapter 1 ½” black 1 Spiral stepped hose adapter 1 ½” threaded black 4 Union nuts 1 ½” 4 Flat seal 1 Glass seal cover 1 Instruction-Made of high-quality ABS material resistant to sunlight and aging-Comes with a UV bulbs system to inhibit the growth of algae-With bio sponges to ensure the balance of water flow and the reproduction of nitrifying bacterial-Suitab