* This product has been retired and will not be restocked once inventory runs out *

A truly innovative filtration system designed for simplicity and convenience. From its innovative use of Timestrip technology to the new patented carbon fitler carrier, every new feature has been designed with simplicity and convenience in mind. This is truly the intuitive filtration system. Simple set up - Ready to go right out of the box with no priming required. Simple Operation - timestrip's patented technology lets you see at a glance when it's time to replace your carbon filter. Scientifically Engineered Water Flow - continuous flushing action prevents debris buildup. Outflow maximizes water agitation and oxygenation. Whisper EX Filtration Systems use Tetra Carbon Filters. Timestrip Cartridge Change indicator included. For 10g-20g aquariums.