Ultima II Filter Media - 8 1/2 lb.$$Garden & Patio

Very high bio film surface Superior bacterial adhesion and colonization Excellent flow through Patented "Y" shaped media Lightweight tubular bio-mediaYou may also like 4ft Bubble Tube Lamp – 16 Color Changing Sensory Water Lamp for Relaxation & Calming – LED Aquarium Mood Light for Autism, Anxiety Relief, Therapy Rooms & Home Decor.