Selling the followings: 1.SKIMZ SM161 Protein Skimmer – (Used for 2 years, running very well, some calcium deposits. Dimension : base = 188mm x 188mm. Chamber height = 410mm. Total height = 550mm. Cup diameter = 160mm. For 500 litres to 1,200 litres as advertised. Needle wheel. Design for in-sump use) - $220 2.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 biopell