API Nitrate Freshwater & Saltwater Test Kit

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API Nitrate Freshwater & Saltwater Test Kit tests nitrate levels from 0 to 160 parts per million. High levels of nitrate are a food source for unwanted algae and indicate poor wate r quality. Keep out of reach of children. Solution #1 contains 41 percent hydrochloric acid. Api Nitrate Test KitApi Nitrate Test Kit Show more