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- Jun 5, 2017
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hello, i was wondering about a nitrate removal cartridge. i was doing research on building my own ro system with the products i use in my plumbing business. i stumbled upon a nitrate removal cartridge from aries filterworks through my distributor. it will remove 475 grains of nitrate in a 4.5 x 20 filter cartridge. wodering if this is safe to run through my aquarium to remove excess. has anyone heard of this being done?