JNS Alpha 2 Biopellet Reactor (Used for less than 6 months). Dimension : Chamber diameter = 4 inches. Chamber height = 9 inches). Come with pump and more than half pack of biopellets (original packing of 1000ml). Note: Some calcium deposit attached on reactor. - $150 Self collect only at Sembawang area.Genuine buyers, please email me at email@example.com if interested.