***INCLUDES NEW G-300 PUMP WITH PIN-WHEEL IMPELLER*** ASM in-sump skimmers are constructed of extruded PVC tubing and injection molded plastic. ASM protein Skimmers use needle wheel design on a Sedra pump for to create a finer bubble for highly effective skimming action! Easy to use! Just set it in the sump, plug it in and adjust the outlet tube! ASM MINI-G Protein Skimmer Specifications: - Gallon Rating: up to 75 gal. - Pump: 1 x Mini Pump - Reaction Chamber Diameter: 4.5" - Footpring: 5" x 7.5" - Height: 20.5"