All Penguin BIO-Wheel Power Filters deliver simple, easy, 3-stage aquarium filtration...without the hassle of air pumps, valves, tubing or air stones. Now there are new features, new sizes, increased flow rates and a BIO-Wheel that"s up to 50% larger! The new two-piece filter hood provides quick flip-top filter cartridge access. A noise-reducing vented cover ensures quieter operation. The adjustable mid-level intake increases water circulation throughout the aquarium and the larger 200 and 350 models feature extra media slots -- you can add an extra Rite-Size Filter Cartridge or Penguin Refillable Media Cartridge for enhanced chemical filtration. Convenient Penguin Rite-Size Filter Cartridges come ready to use with each filter...ready to mechanically and chemically remove waste, discoloration and odors. Each contains new faster-acting Black Diamond Premium Activated Carbon for maximum efficiency. Biological filtration is provided by the revolutionary BIO-Wheel - proven best at removing toxic ammonia and nitrite. Maintenance is fast and easy. The Rite-Size Cartridge changes in seconds - with no messy assembly required. And the BIO-Wheel never needs replacing! Every preassembled Rite-Size Cartridge now comes in new color-coded packaging. It's the fast, easy, foolproof way to choose the right cartridge for your Emperor Filter System! NEW PERFORMANCE FEATURES Noice-Reducing Vented Cover For quieter operation Two-Piece Filter Hood For flip-top filter cartridge access Adjustable Mid-Level Intake attaches to the Intake Extension Tube to provide increased water circulation. Extra Media Slots (Penguin 200 and 350) For an additional Rite-Size Filter Cartridge or Penguin Refillable Media Cartridge for enhanced chemical filtration. Plus... Leak Proof, Easy-Care Design One-piece tank and motor assembly means no O-rings to fail. Single moving part removes easily for cleaning. No oiling or motor maintenance required. Automatic Self-Starting Feature Restarts automatically. No messy siphons or valves. Worry-Free, Safety Engineering UL listed; cUL or CSA listed. Epoxy-sealed, moisture-proof motor ensures safe operation. NEW PENGUIN POWER FILTERS Product Name Product Description More Info . Penguin 150, 150 GPH, for all aquariums up to 30 gallons. Rite-Size "B" Filter Cartridge. INFO FROM UNITED PET GROUP