That is the normal rate in which the filteration systems at the Aquarium of the Pacific. Being home to over 12,000 life animals in the aquarium, your going to need a hefty filteration system. Staci over at Aquarium of the Pacfic which is located in Long Beach, California explains their system which sounds a lot like the ones we use in our tanks. They use protein skimmers, a modified plenum and ozone of all things. Be sure to drop in and read the interesting article.
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