Although this article directly references the Fluval 405

The Fluval 205 is capable of handling tanks up to 40 gallons; it has an output of 180 gallons each hour; and the dimensions are 7 x 7.5 x 17 inches The Fluval 305 maintains tanks of up to 70 gallons; it has an output of 260 gallons each hour; and the dimensions are 7 x 9.5 x 17 Finally, the Fluval 405 specs are listed below Specs and Features The 405 measures 7 x 9.5 x 20 inches and weighs in at 11.5 pounds. The system is capable of maintaining aquariums of up to one hundred gallons The pump has an output of 340 gallons per hour The pump provides at least thirty five percent and up to fifty five percent more volume than round canisters The hosing is ribbed and opaque, which allows it to be bent and turned without kinking An instant priming handle eliminates the need for manual siphoning an allows for quick, easy start up The original AquaStop Valve prevents loss of vacuum by creating a water and air tight seal for easy hose removal The high output motor withstands high temperatures and continues efficient pumping because it is hermetically sealed and resealed with epoxy. This eliminates theneed for coolant and promises optimum operation The impeller is the only moving part in the system Media is available in pre-packed filter baskets arranged for general use. Thisallows new owners and novices to simply purchase media and drop them in. Customized media are also available for advanced users who wish to have more control over water conditions The intake and output valves snap in instantly with original rim connectors that allow for easy set up and removal This filtration system can be used with both salt and fresh water aquariums up to one hundred gallons The Filtration Process The Fluval 405 is a three stage filtration system with chemical, biological, and mechanical filtering capabilities. A clog proof intake brings water in and passes it through to the media. The media can be bough pre-packaged or arranged individually to meet any aquatic condition needs. Finally, it is reintroduced to the tank from an output with a wide nozzle that agitates the water to promote waste breakdown and prevent settling. Review The Fluval 405 is a good filtration system for mid-sized tanks. The ease of set up and instant priming handle make it a good choice for beginners. The instant priming handle, AquaStop Valves, pre-packaged media, and easy to move hoses make reduce much of the worry that comes with setting up a tank for the first time. Also, experienced aquatic pet lovers will love the versatility offered by the 405. Again, because it is easy to use, but also because the high level of customizability allows for specific control over water conditions. In all, this filter is well build for almost any need.