Use 1tsp (5ml) per 10 U.S. Gallons (38 L).
For best results, add FritzGuard® to tap water before adding water to aquarium.
For marine aquariums, turn off protein skimmer for 6 hours after adding FritzGuard® to reduce foaming if a concern.
For areas with very high chlorine levels, dosage can be safely increased or repeated up to 5x.
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