Rapidly remove nitrate and eliminate toxic nitrite in a matter of hours. Laboratory-grade, high-capacity ion exchange resin can be recharged simply by soaking in saltwater overnight - use over and over again. 150 g removes up to 25 mg/L (ppm) of nitrate in a 50 gal aquarium. Will not affect pH or hardness and contains no phosphates. Media bag included. For freshwater use only.
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