Protein Skimmers/ The Mid-Level Line Protein Skimmers/ The Mid-Level Line Filters Wet Dry Filters FUSION FLOW AQUA-FUGE Reef Sumps ALPHA-FUGE Royale Protein Skimmer The Premier Line The Mid-Level Line Hang-On Nano Skimmer Overflow Boxes PRODIGY Top (Accessories) Reservoir Tanks Filter Socks The Color Series Nano Skimmer Accessories Other Accessories Overflow Box Accessories Filter Sock Holders I V Dosing Pumps Filter Sock Holder Accessories ALPHA-FUGE Accessories Reef Sump Accessories Wet Dry Filter Accessories AQUA-FUGE Accessories Skimmer Accessories Replacement Filter Pads Accessories Categories MAP Price - Product Categories MAP Price - Accessory Categories MAP Price Discontinued (Accessories) X-120 The Mid-Level Line $241.99 X-160 The Mid-Level Line $362.99 X-220 The Mid-Level Line $450.99 X-350 The Mid-Level Line $505.99 X-750 The Mid-Level Line $1299.99