AquaReady internal media reactor, your reliable solution for achieving optimal filtration and water quality in your aquarium. Whether you're targeting phosphates, nitrates, or enhancing biological filtration, the Internal Media Reactor ensures thorough and customizable performance. Its easy-to-access chamber makes media replacement and maintenance a breeze, while the durable construction ensures long-lasting reliability. Say hello to clearer water and healthier aquatic life with the Internal Media Reactor by AquaReady, the perfect addition to any aquarist's arsenal. Great for aquarium systems with and without a sump with it's low profile footprint.