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• Designed to ensure even distribution of carbon throughout for more filtration and longer cartridge life
• Features simple, no mess replacement
• Superior Biological Filtration The patented biological grid has a large surface area to support more of the beneficial bacteria that eliminates ammonia and nitrates
• An internal pump also allows for virtually silent operation, continuous flow raters, less chance for leaks, and a much thinner profile
• Enhances water quality and clarity, increases oxygen levels and keeps your filter less noisy