Aqueon Large Cartridge, 3 Count

• Higher flow rates ensure higher dissolved oxygen content for healthier, more active fish
• The internal pump design helps dampen noise, eliminates leaks and starts up automatically after cleaning or power interruptions
• Superior Biological Filtration The patented biological grid has a large surface area to support more of the beneficial bacteria that eliminates ammonia and nitrates
• A second wet/dry grid provides further biological filtration and oxygenation as the water returns to the aquarium
• Internal Pump Design Since the filter pump is submersed in the aquarium, there is no need for priming at setup or when restarting the filter after cleaning or power interruptions