API Quick Start – 4 fl oz Contains nitrifying bacteria to help establish biological filtration in freshwater and saltwater aquariums. It is not a tap-water dechlorinator. Manufacturer Directions Shake well. Add 10 mL per 10 US gallons of aquarium water. For saltwater, double the dose. Important Aquarium Guidance Condition new tap water separat
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This API product works very well. I’m so glad you offer these products.